As analyzed by many forum members including Khris, it is not fair to simply implement relegation. I think some complicated changes may make it looking fairer. I propose some as follows:

1. automatically deduct one star of all players.
2. makes all contracts with salary increment so that the burden of any relegated or even non-promoted teams increase as punishment.
3. fans numbers reduced significantly, so does the ticket prices in order to maintain full attendance.
4. like real world, contract of some players, say all 4 star up players, has relegation release clause or relegation salary increase clause.

But in fact I don't prefer making the game rule too complicate. So I support the same system remains the same.