I think they're fine as they are. They fill just about every role I can think of and then some. The only thing I miss from PR is a kind of sapper who could deploy firebases, barricades, etc. in conjunction with the Commander. But then again, we do have the deployable shield and turbo laser
. And it'd look really weird if Rebels set up bunkers on Endor, or Imperials started to build a base near the Rebel trench on Hoth.
"One of the bitches actually gave birth while she was attacking, and her puppies joined in on the carnage."
--the awesomeness that is Boatmurdered.