Even if you arent heroic sith, its still useful at lower tiers.
JTR team in sith raid (any level)
bb8 (ideally zetad), but this isnt necessary, it merely makes you deal more damage.
R2, I havent tested it without but number crunch does help for damage and survive ability but Visas Marr already helps so much here
visas marr (she cleanses the whole team and does a ton of damage)
resistance trooper.
If you don't have visas Marr then scavenger rey is a potential replacement, but you'll be having more difficulty getting your health back up
Id say right now CLS isn't going to be your priority to zeta for long term. The only potential reason you would is if Chewbacca's influence is enough to put Rebels reliably back into meta. But then you're probably going to need to zeta Han anyway