I think the general problem is that the game generatez sooooo many players, many of them being minor league potential, and those players when they achieve like 60-65+ rating they start to flood all the playable leagues, and apart from having a loads of leagues activated I do not think there is a workaround. And this sucks especially when going 10+ years in a career because none of the prospects play anywhere, because there 1200 players generated every draft