I've been mildly frustrated with being unable to change skins and decals in the Eden editor.

Global Mobilization has a feature to do exactly this, but this mod lacks even the ability to change the base skins using the Eden feature to change vehicle appearance. Zeus can't do it either.

It would be a lot more sane for the mod if instead of just having a bajillion different spawnable units, you could change the skins and emblems using the editor.