Climbing in RTA is a grind. After a few dozen matches it becomes rather boring to see the same characters for the same team compositions. It would be nice if there was some kind of incentive for players to use characters that aren't seen too often.

Being able to reliably win with non-meta characters speaks to the player's skill, so I believe it would be fair to award more RTA points for winnning with what essentially is a handicap. If more people started drafting uncommon characters, RTA would be much more dynamic and fun in general.

If it were possible for developers to order characters by usage in RTA, it wouldn't be too complicated to implement such a system. Sorting a list, dividing it into tiers and assigning flat points, a fraction of a point or a bonus percentage depending on where each chosen character falls in said list.