there should be a feature that allows you upload a custom skin to a skin gallery, and use it in game

this is my idea of the upload process:
1. several pictures are uploaded (one for each of the units travel paths) onto a skin file, which is associated with a unit type
2. a warning appears saying "if your skin is found to be inappropriate, it will be deleted and you will be banned"
3. skin file is uploaded to skin gallery/database

and now how to use a custom skin:
1. you save a skin to your skin library
2. in a game, when you build a unit, (after the unit is named) it will ask you to pick a skin (choices would be "default" and whatever skins in your skin library are associated with the unit you're building)



Pros:
this would make the game more customizable

Cons:
only the default skin would have an animation