I was thinking of a new game mode to introduce maybe for wars 2. How about this it is basically like skirmish but you get a base 2 at most and have it like reach firefight so you get time to prepare at the start and then waves of increasingly difficult opponents come against and you obviously need a population limit. But it would be quite fun as a little side mode.
You could even edit the waves and skulls as well if needed.
VulruinDrokhan also has a good idea for a skirmish related mode If your interested under the name of GAME STYLE IDEA.