A lot of people complain that you have grind pretty hard to earn a lot of IP because we don't get enough for playing a game, and I agree. So here is a solution I thought of:
(I don't know if this is already in place) I was thinking how about for a new beginner, at every 5th level they get to (5, 10, 15, 20, 25, 30) they could ~2000IP, this will help em get some of the 4800/6300IP champs they want.
Possibly for ranked players, if promote themselves to the next division they could get 500IP as a small reward. This can't be repeatable so you can't demote yourself intentionally then climb back up.
And for normals just increase the amount of IP earned by +50 or something