First off, I am NOT a Hater. I think Bioware did a great job bringing us something we can love as much as KOTOR.
But if we are going on about what we'd "just love" to have in game, I'd really like to see the "Maurader" class from the miniature game. I know the name is already taken, but in the mini game, you had a pistol in one hand, and a melee weapon in another. You could choose a two handed melee and pistol, or lightsaber and pistol.
I'd love to see a class like this in game, something that's balanced both at range and melee, but not uber in either.