What if using Sabine, no Chopper
I think this guide is good if you're using Chopper. https://forums.galaxy-of-heroes.starwars.ea.com/discussion/155008/this-is-a-guide-i-guess#latest Generally speaking this should hold for Sabine ...
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Some people have done it with toons of G8, but if you can get Sabine, Hera and Zeb to G9 I think you will be fine. I beat it with Sabine (no Chopper) but it wasn't easy (because it isn't supposed to be easy for Thrawn). I didn't have any zeta abilities on them, just Omegas and not even all of them.
Make sure you have all cooldowns reset when you get to Thrawn. Take out ST, then the two black suits, then the healers, then Thrawn. Have Kanaan taunt and give HIM the backup plan (his unique causes the counter attacks, he needs to stay alive). Use Zeb to assist both Hera and Ezra as two straight shots from Zeb is almost guaranteed to stun them.
Make sure you have all cooldowns reset when you get to Thrawn. Take out ST, then the two black suits, then the healers, then Thrawn. Have Kanaan taunt and give HIM the backup plan (his unique causes the counter attacks, he needs to stay alive). Use Zeb to assist both Hera and Ezra as two straight shots from Zeb is almost guaranteed to stun them.
