sorry to say that but you are driving players away.
you made the rentals bidaily. no one really liked it but said "ok, not something bad".
you separated the two leagues and put a fee on the wild just to be able to play. basically, you killed your casual old players.
you stopped giving unbounded cards. that killed the mood of play2earn
you made the 1dec minimum rent. That already hit some players who rent a lot.
now you are thinking of making the rentals seasonal? what are you expecting from the players who are inactive daily due to life? you are going to lose them

do that and you will have a bit backlash to your number of players. not to mention the new players ratio. who's gonna start playing today and rent for 15 days? total joke