Customizable weapons?

Just a simple idea I thought could be really fun, were diffrent purely cosmetic changes to your weapons could be awarded to players through completing achievment, purchasing DLC in the store or randomly after succesfully completing a map.



With customizing weapons I mean really simple stuff to personalize your own weapon through maybe CSGO styled stickers, recolouring, adding new elements like spikes to a baseball bat or setting your sword on fire? (as mentioned before I would like it to be purely for appearance so the player isn't forced into a certain "attachment" because it's stronger)



I think it could give the game a replayability to players who don't find achievments all that rewarding and personally I love this kind of stuff and I think it would be kind of neat.



Thanks for the read, leave any comments and suggestions if I missed something that could be important.