Start Everyone At Summoner Level Ten
I believe this would alleviate at least 'some' of the issues with starting up, for example, Jungling. Perhaps even 15 or so. It'd get people more used to the system as well, if the goal is 'learning' and being given a bunch of points at once to play around with at the start, especially given that our new Mastery system is "choose 5 things in a row at the same time" for most of it.