Your system proposal dosn't make sense. https://osu.ppy.sh/s/24313 (airman) #1 score would probably be more PP worth than https://osu.ppy.sh/s/374115 (apparition) DT+HR+HD+FL.
Your ratting system value how many low ranks played a map.
Also don't make a difference between real map diff.
Also new players wouldn't move from 0 PP because they have to compete directly with cookiezi, rafis... and all their scores, being this ones at average scores. Also have to compete with people like me who sometimes play DTHRHDFL at 1*-2* maps for fun. There is no chance for a new player to compete with tons of players upping average scores at easier maps. They would think it's imposible improve ranks and quit xD
Your system incentive players like me to go for leaderboard at 1* maps where new players have an average of 70% acc instead 5* new ranked maps what have an average about +90%.
Also easy to learn maps what have really bad scores due to sightread plays will be more worth than replayed maps where everybody up their scores.
https://osu.ppy.sh/s/4039 This map for example, i'm sure it has an average around 10%-20% acc and more than 80% of plays die at first patterns. For your system this map it's really hard, when it's not. So i'll learn it and for example after 300 plays get at #1 leaderboard with DT+FL and get insane amount of PP sniping top #50 players by playing similar maps what i know players have bad average scores on it. Also, since i did my DT+FL SS first than anyone else, i'll be #1 for ever, because when people draw my score, mine still #1 because i did it first. Then same score wouldn't worth the same for all players. Also players wouldn't care to play that map anymore because i already have #1 on it and they can't get #1 anymore, so will be more worth to search for a similar map where they can get #1 than snipe mine, making my PP stay there for a good good while and my rank way bigger than my actual skills, being really unfair to new other players and after all to new players what are joining the game.
Also at high level players can make new accounts to set bad scores at other player topranks. And with this system you can be sure it's going to happen.
At the end the ranks will be totally random.
If a new PP system come out should be an improvment with small changes from actual.
Or a PP system made by players ratting. Where players rate maps under their skills to don't exploit it. For example my lowest toprank PP It's 89pp. I should be able to rate maps what i can get an S to give from 1pp to 88pp. Make and average of all players rate at an expecific map and make a second average with the actual PP system, getting the final value(value what change over the time) so isn't a really big change from ranks to everyone, since the actual PP system decide 50% of the PP a map give.(Or even more If staff decide it)
At high ranks top players should be able to rate over their lowest PP rank. For example players who had made it at least once into #1-#999 the current year have the change to rate the PP a map gives even being higher than their lowest PP toprank.
Since skills change, maps change, and new things come out, players are the best to adapt actual PP system.
A bad use from this ratting system (exploit/trolling/unfair competition) will be a ban from PP ratting system from a year.
Anyone could report a player who is trolling ratting and get a ban from PP rating system from a good while.
The implementation would be really easy and wouldn't make any difference on players ranks if you made the PP system be 90% and new PP players ratting system only change 10% of the actual PP.
Practical example. A map give 100PP. Players average rate it to worth 50 PP instead. 90pp + 5pp = 95PP. Once X number of players have rated a map, and the system it's tested enought, the players ratting will be more worth.
It's a good system i think and can be slowly implemented.
The PP a player rated a map should be public to be able to disccusion and reevaluated.
Since the PP rated for a map it's public, and ordered by lowest rated and highest rated you can find really easy If someone rated 200pp to a 1* map or 1pp to a 5* map and report it. After X reports that ratting gets eliminated from ratting list. If a player get X number of bad rated reports will be unabled to rate X time, being this time banned from ratting increased each time one of his ratting numbers get's reported. Top #1-#999 players have their own ratting-report system to don't be reported randomly.
This is only an idea how it should be on my opinion. Not a proposal. If anyone want to make a formal proposal from this idea it's free to do it. My english isn't good enought to make a good proposal and express myself, and also it's an idea, not something i have worked on to make it more viable or less.
Your ratting system value how many low ranks played a map.
Also don't make a difference between real map diff.
Also new players wouldn't move from 0 PP because they have to compete directly with cookiezi, rafis... and all their scores, being this ones at average scores. Also have to compete with people like me who sometimes play DTHRHDFL at 1*-2* maps for fun. There is no chance for a new player to compete with tons of players upping average scores at easier maps. They would think it's imposible improve ranks and quit xD
Your system incentive players like me to go for leaderboard at 1* maps where new players have an average of 70% acc instead 5* new ranked maps what have an average about +90%.
Also easy to learn maps what have really bad scores due to sightread plays will be more worth than replayed maps where everybody up their scores.
https://osu.ppy.sh/s/4039 This map for example, i'm sure it has an average around 10%-20% acc and more than 80% of plays die at first patterns. For your system this map it's really hard, when it's not. So i'll learn it and for example after 300 plays get at #1 leaderboard with DT+FL and get insane amount of PP sniping top #50 players by playing similar maps what i know players have bad average scores on it. Also, since i did my DT+FL SS first than anyone else, i'll be #1 for ever, because when people draw my score, mine still #1 because i did it first. Then same score wouldn't worth the same for all players. Also players wouldn't care to play that map anymore because i already have #1 on it and they can't get #1 anymore, so will be more worth to search for a similar map where they can get #1 than snipe mine, making my PP stay there for a good good while and my rank way bigger than my actual skills, being really unfair to new other players and after all to new players what are joining the game.
Also at high level players can make new accounts to set bad scores at other player topranks. And with this system you can be sure it's going to happen.
At the end the ranks will be totally random.
If a new PP system come out should be an improvment with small changes from actual.
Or a PP system made by players ratting. Where players rate maps under their skills to don't exploit it. For example my lowest toprank PP It's 89pp. I should be able to rate maps what i can get an S to give from 1pp to 88pp. Make and average of all players rate at an expecific map and make a second average with the actual PP system, getting the final value(value what change over the time) so isn't a really big change from ranks to everyone, since the actual PP system decide 50% of the PP a map give.(Or even more If staff decide it)
At high ranks top players should be able to rate over their lowest PP rank. For example players who had made it at least once into #1-#999 the current year have the change to rate the PP a map gives even being higher than their lowest PP toprank.
Since skills change, maps change, and new things come out, players are the best to adapt actual PP system.
A bad use from this ratting system (exploit/trolling/unfair competition) will be a ban from PP ratting system from a year.
Anyone could report a player who is trolling ratting and get a ban from PP rating system from a good while.
The implementation would be really easy and wouldn't make any difference on players ranks if you made the PP system be 90% and new PP players ratting system only change 10% of the actual PP.
Practical example. A map give 100PP. Players average rate it to worth 50 PP instead. 90pp + 5pp = 95PP. Once X number of players have rated a map, and the system it's tested enought, the players ratting will be more worth.
It's a good system i think and can be slowly implemented.
The PP a player rated a map should be public to be able to disccusion and reevaluated.
Since the PP rated for a map it's public, and ordered by lowest rated and highest rated you can find really easy If someone rated 200pp to a 1* map or 1pp to a 5* map and report it. After X reports that ratting gets eliminated from ratting list. If a player get X number of bad rated reports will be unabled to rate X time, being this time banned from ratting increased each time one of his ratting numbers get's reported. Top #1-#999 players have their own ratting-report system to don't be reported randomly.
This is only an idea how it should be on my opinion. Not a proposal. If anyone want to make a formal proposal from this idea it's free to do it. My english isn't good enought to make a good proposal and express myself, and also it's an idea, not something i have worked on to make it more viable or less.