I used to struggle with GW, now I auto it...the entire thing...and it's due to Bariss.
My team:
Bariss (L) 6 health mods with as many health primary/secondary u can and omega lead.
Lumi same mods
Aayla
Ani
QGJ
Bariss lead gives each jedi a 3,600 passive heal at the start of each of their turns. Her basic heals everyone 45% of the time for 2,700. Lumi backs her up just fine and under Bariss lead and all the health I have on Lumi, the whole team is downright tanky and with offense up from Ani or QGJ, 4 of the 5 hit quite hard.
It used to frustrate the heck out of me that QGJ / Aayla would call Bariss to assist 90% of the time. Now, I use it to my advantage since she heals everyone for so much more on her basic since I modded her properly.
After struggling for so long, it's so nice to just hit the auto button 12x while enjoying a smoke and a cup of coffee. I just don't see her viable in the current state of Arena.