We can't stay winning levels forever and ever.... unless the teams are grouped and all teams inside a same group promote.... so, here another suggestion,
and is that we know that internally each 20% are 5 points, L1 - 5* are 20 points, L2 5* 25... 30...
So a 5* level 80 are 415 points,
so 10* are 440 points, and would be good put a cap there at 440AvQ in the Level 80 and do a more dynamic politic of retirements in the top server, retiring 8-9* players when they are aged 30.
The server is like a gum and is gonna collapse again if nothing big has been implemented, so we need a top level where to bring a bigger number of teams and have activity.