Actually, make the Dark Trooper more like the Clone Jet trooper and there's your space trooper right there.
I only play against bots, but I don't find most imp units to be superior to their rebel or even droid equivalents sadly. I'm ticked off personally, although the pilot and sniper are pretty decent. I just feel the old "trooper" is the real 'bang for your buck' trooper.
Actually, a boarding party level would be excellant come to think of it. I'd have loved if Bespin was like that as well. Got real potential if done right.
I am the definition of your defeat.