Clothes

I just came up with what I think is a brilliant idea. The other day I read something about costumes on silph road. Why not take medals and make them conditions to unlock new clothes for your chara.
E.g. all type medals give you up to 3 pieces(b,s,g =shoes, jeans, shirt) of clothing representing the type.
Special medals give only one when reaching gold. Imagine pikachu hat, magikarp backpack or rattata sneakers.
This would be an awesome way to show off while not messing with the balance or meta.
Items could also be adapted to real life merch. What do you think?