Just get Nihilus as soon as possible and add him to your team., maul is great as well!
It sounds like you need to play with some strategy as well. It's all about making the ai waste CDs.
First put tenacity down on baze with tfp; chirrut will cleanse.
if enemy has another cleanser (could have 2 more), either ability block them and take them out;
OR debuff baze (hopefully with basic; only enemy without tenacity up) and wait for last cleanser to use his cd, before you lay all your debuffs down.
https://m.youtube.com/watch?v=MW0AjxEhr_g
Here is a video of my squad using this strategy.
I believe you can beat this match up of the mods are good. All sith assassin will do for you is make battles vs every sith squad completly rng that also involve ep.
