I think auto-converts shouldn't be counted. As people have already said, they're terrible compared to mania-spec maps. Either don't count them, or make them worth WAY less. There's not a whole bunch of mania-spec maps right now, but there's enough to get by now and a lot more will come soon. Auto-converts are a bad representation of actual mania maps. Some are good, but most are god-awful and don't match the music at all. They should be for fun when a song you like doesn't have a mania-spec song.
And accuracy shouldn't be a big part of calculating rank. It should be worth something, but not a ton.
Let's say there's two people. Player A gets 95%+ every time, but only plays easy/normal tracks and falls apart at anything harder. Player B gets around 75%-80% each time, but is playing insane songs. Player B is obviously better, but has lower accuracy. Give Player A a little bonus for having that accuracy, but they definitely don't deserve more than Player B.
As for different key modes, I have no idea. 4k definitely shouldn't be less than 7k just because it has less keys. People who think 7k is harder because it has more keys are wrong. They can both be extremely difficult. 4k can murder you if you don't have stamina and 7k will get you with patterns. Because of this, some 4k maps are harder than some 7k maps. Unless different keymodes are being split into different rankings (which I don't think should happen), we have to take this into consideration.
And accuracy shouldn't be a big part of calculating rank. It should be worth something, but not a ton.
Let's say there's two people. Player A gets 95%+ every time, but only plays easy/normal tracks and falls apart at anything harder. Player B gets around 75%-80% each time, but is playing insane songs. Player B is obviously better, but has lower accuracy. Give Player A a little bonus for having that accuracy, but they definitely don't deserve more than Player B.
As for different key modes, I have no idea. 4k definitely shouldn't be less than 7k just because it has less keys. People who think 7k is harder because it has more keys are wrong. They can both be extremely difficult. 4k can murder you if you don't have stamina and 7k will get you with patterns. Because of this, some 4k maps are harder than some 7k maps. Unless different keymodes are being split into different rankings (which I don't think should happen), we have to take this into consideration.