Leveling 1-30 Allow players to pick a few champs at different milestones?

I know that we have loot rolling in from the honor system and the performance based chests and keys. I'd like to see RIOT go in a different direction and create and stepped champion choice system during the first 30 levels (until you can play ranked games.) The number of champions keeps growing and the new player experience is already a bit sour between all the botters, afk levelers and the sheer amount of time it takes to level. What I propose is a tiered system that allows player to pick a base champion at certain levels up to level 30.

Level 5 - 450 BE Champion

Level 10 - 450 BE Champion

Level 15 - 1350 BE Champion

Level 20 - 3150 BE Champion

Level 25 - 4800 BE Champion

Level 30 - 6300 BE Champion

Seems like it would be a nice gesture to help entice new players into the game and help flesh out a bit of a champion pool by the time they hit 30. There still will be plenty of champions to purchase and this will still not be enough "free" champions to qualify for ranked games at 30 but at least it'd help a bit and make it a bit less random than the current system.