The real idea is to add the Separatist tag to her lead ability. So Separatists and Nightisters gain speed and remove turn meter. They also gain turn meter when falling below 100% health.
One OTHER idea I had would be to flip flop her unique ability.
Instead of gaining 15 speed for every unbuffed enemy, she should gain 15 speed for every BUFFED enemy.
She's so incredibly squishy even at max gear she still wouldn't likely become meta, but these would be a couple of steps in the right direction.
Last, but not least, give Savage Oppress the Separatist tag.
Edit: @CG_NotReallyAJedi has the dev team looked into doing anything like this?
I realize the Separatist tag it really more for ships but it could open up some interesting possibilities with Nightsisters and Dooku and Geonosians.