I've been so hooked on Galactic Conquest mode, where tactical combat fits intot he larger strategic theater, that that's all I've been playing (when I have free moments to spend on EaW). Believe it or not, I just played my first space skirmish today. Woah! Great fun! I've found my new 20-minute diversion.
I love engrossing campaign stories (Blizzard all the way...I think that EaW could efinitely improve in this area), but for instant action, skirmish games are absolutely great, especially when I don't feel like investing the next four hours of my life in a computer game!