This is a problem that can't be solved in any other way except the MAT/BAT team changing their own behaviors. We can't expect MAT/BATs to look at every single pending map, so naturally if a well known mapper like Andrea posts a new map, chances are that people will want to look at that map because it has a certain level of guaranteed quality. I can't really blame modders for skipping over no-names since oftentimes modding a subpar map feels like a waste of time since it probably won't get ranked anyway.
At the same time though, there are a lot of good (read: at least rankable) maps out there that just don't get looked at enough, and probably deserve to be looked at. I know that a lot of "unknown" mappers try really hard to get people to look at their maps, and eventually after a long period of time get enough SP on their map to feel like it's ready to be looked at by a MAT/BAT. It sucks if you work that hard for that long to get anyone to mod your map, then see a map by a well known mapper get ranked in a matter of days after it is posted.
It's pretty obvious that the SP system needs a rework, but that cannot work on its own. The MAT/BAT have to more actively ignore who made the map, and rather put priority maps that have been modded a lot and have been in Pending Beatmaps for longer periods of time. We should look to reward all who put in the time and effort, rather than only rewarding those who have an established name.
At the same time though, there are a lot of good (read: at least rankable) maps out there that just don't get looked at enough, and probably deserve to be looked at. I know that a lot of "unknown" mappers try really hard to get people to look at their maps, and eventually after a long period of time get enough SP on their map to feel like it's ready to be looked at by a MAT/BAT. It sucks if you work that hard for that long to get anyone to mod your map, then see a map by a well known mapper get ranked in a matter of days after it is posted.
It's pretty obvious that the SP system needs a rework, but that cannot work on its own. The MAT/BAT have to more actively ignore who made the map, and rather put priority maps that have been modded a lot and have been in Pending Beatmaps for longer periods of time. We should look to reward all who put in the time and effort, rather than only rewarding those who have an established name.