New champion collection is a bad idea
It feels like an entire new game where I have to relearn almost everything. Imagine replacing all champions on SR, same thing.
It took players weeks to learn S2 champion collections, completely replacing it is a fuck you to us players.
If you keep replacing the collection every season, TFT will just be a game like HS, but worst. Players will tired of always re-learning new comps and not play the game mode anymore.