Look, Here's the Thing...
At this point, I would be more than happy to see Riot stop releasing new champions for awhile. Are new champions fun? Yes. But playing a new champion is both pointless and no fun when you just get swamped by the old champions that Riot can't get under control. You've reworked several champions again and again at this point... Xin is now completely insane... Yi is still a monster, and Zed is ridiculous, just to name a literal few.
If you're willing to get rid of an entire game mode just to "free up resources", I would assume that not having to rework the same champion over and over would save you some freaking resources.
I would much rather play a game with some sort of actual balance instead of "play who is good right now or lose" than have some shiny new champ that will forever be more underpowered than a first season nonsense.
**EDIT: In no way shape or form am I saying "take people out of the design team and put them in balance". My point is that it would probably be nice if the balance team didn't have to take time every patch to try and balance a new champion, when there are old champs that haven't even been looked at in a super long time. **