Now write up advanced classes, something to make it different from being Smuggler, and create an Empire Mirror class version. Write up new quests too, and get a lot of new voice actors for speaking parts too. Don't forget creating new armor looks and animations for powers. Then there's whatever they'd use for their ship. The bit I mentioned for a mirror class? Yeah, apply all that again to keep the factions balanced.
the mirror would be the agent, rep vs imp agents, and then a new one would be needed for the smuggler tho