Wheres the Map Editor? It seems like it would be an easy thing to add, right? Plus it would increase the replay value many times over!
Just a thought; All it would need is The ability to place different height tiles, Units/Buildings, a few preset backdrops and then select a texture set.
Xeno\\
Edit: It would actually be awesome if you opened up the game for modding too. Even if just for singleplayer, player created campaigns would be great :) I'm sure you'd create a large community around it aswell, just look at torchlight.