It occured to me that it would be a cool feature to add Skin Trading of the same type skins among players. Like **ordinary** skin for **ordinary**, **legendary **for **legendary**, **hextech **for **hextech **, **prestige **for **prestige**.
By limiting the trading to the same-type skins, it will banish the possibility for RMT, since you are trading the same value for other one.
Upvote this post in hopes of getting a respond from a Rioter about this idea. We can only hope :)