Decrease champion prices the more you play them
I had an idea, what if the prices for champions decreased if you won games with them while they were free?
For instance, say Yorick is free. I win x amount of games with him, his price goes down by a tier (e.g. 4800 -> 3150). Or, if you got to level 3 or 4 with them while they're free, the price would get lowered by a tier.
This would encourage newer players to try out more champions. It also would reward people for getting fairly good at a champ that they don't quite have the IP to get yet, making the grind a little bit easier for them.
What do you guys think?