Acquiring Champions is way too slow
I am almost level 200 on this account. I created this account recently, and didn't get champions for RP, but only by leveling up. Currently I have 82 champions, which is absurd, considering that there are 145 of them, and I'm nearly lvl 200. I was using the fastest methods for getting champions, which is not purchasing them on full price but rather upgrading them from champion shards for a lowered price, and also got many champ shards from chests as well (ty rito), and still dont have 2/3 of them. (Well I did spend some BE for champion masteries, but who doesnt) Judging by this, a player would need to get at least lvl 250 to finally have all champions, and not spend any BE on masteries or anything else you can.
On pre-30 levels, you earn champions considerably fast, because beginner missions grant you champion permanents, but after 30, the pace of acquiring drastically slows down, and only speeds up after you reach higher levels and get more and costlier champs.
I think this should be changed. For a new player, that doesnt supposedly grind the game 8 hours every day like most of us needs weeks to earn enough BE for a 6300 BE Champion that they might like to try.