Leveling up isn't rewarding for those of us who had too much IP before
Now I have too much BE instead of having too much IP, and all I get for leveling up is more BE.
I feel like we should get really slow incremental progress towards skins. If somebody's been playing LoL for a few years they're probably not going to buy any more or any less RP regardless of what you do. What you should think about is how much you can keep them playing LoL vs other games.
Or maybe there should be a BE sink that people like me would use, like say for example we could do the skin boost with BE? People who are saving up BE for champions might not use it but people who don't know what to do with their BE would use it.