Minecraft skin functionality with Super Smash Bros. Ultimate

Basically this would allow you to take any skin that you make and put it as a texture for Smash instead of just having Steve, Alex, Zombie, and The Enderman. Of course some form of monitoring would have to go on to ensure that no offensive art is used on the skins. This would allow for more freedom, which would function similar to the Mii's creativity in Smash.