I do agree with this idea considering that I've always thought Sith Troopers have the best gear, and to make up for it a Republic Agent would be cool, but a Republic BH wouldn't work because BH are mercenaries not soldiers.
If you have pre-ordered rise of the hutt cartel, do you get the extras that come with the pre-order immediately or only when the expansion pack comes out?
Darth Malgus is my favorite Sith on the game, but so far looking at the storyline of the Sith Warrior and Sith Inquisitor it doesn't look like you meet him.