I'm just new at this.. but relegation seems good.. only that you are not making the right changes... making incomes balance between leagues more pronounced... making some punishment to morale for some days.... increasing players salary... taking many fans... and of course, players should gain a star that would be realistic and make salary higher..

I dont think that a soccer crack as CR7 would improve his skills the same way as he does when playing against Messi, if he plays against really crappy players... just be honest.. he wouldn't improve... because he isn't really competing.. So that team which is relegated wouldnt be tanking instead it would be stagnant, becouse their players aren't improving, they just are getting their players older and older, they arent motivated to play good, so that teams keep with out getting fans, worst theam would have a good chance to win against them just becouse their are move motivated... the incomes get worst and worst with time, and the club balance should become negative, unable to keep good players becouse the club have no money to pay them, so that club becomes in a balanced team for that league....
If you want a change.. make a real big one...

Just saying.. Oh!! i'm forgetting. i'm really new to english, excuse me..