It would be cool if zone put focus on the plasma sabers from a gameplay perspective. They are essentially the best weapon in the game. It would be cool if you could unlock new ganis revolving around your sabre as you level up from missions and such.
Examples: Meditating (floating using the "force" with your plasma saber in your lap)
Sabre Dance
Sabre Spin
Sabre Throw
etc
Again, just as ganis, not actual attacks or anything.