It's great to hear from someone using the in-game recommendations. I just looked up Darth Bane and Third Sister for you.
For Darth Bane it is:
- Crit Damage Set and Health Set
- Primaries: Health Circle, Health Cross, Crit Damage Triangle and Speed Arrow
For Third Sister it is:
- Speed Set and Health Set
- Primaries: Health Circle, Health Cross, Health Triangle and Speed Arrow
I hope this helps. And for the future if you wonder which are the recommended mods for any character, look at this guy: https://swgoh.gg/p/626223778/characters/
He has every Character at Relic 8 or higher (except for Third Sister funnily enough) and only uses the in-game recommendations.
