Thrawn unlocked 7* (bare minimum)

After some struggles, I geared up a little more and re-worked the mods that I moved over to my Phoenix squad and I was able to get 7* Thrawn on the first try with the following revamped group....had 3 toons left when Thrawn was defeated on the last battle:

Ezra: G10, maxed Flourish, omega'ed his unique and other 2 abilities at level 6. Crit chance, tenacity and health sets with primary stats of health/speed/crit damage/protection....secondary stats focused on speed and crit chance

Sabine: G9, omega'ed her unique, other abilities at level 6. Crit chance and 2 health sets with primary stats of health/speed/crit damage/protection....secondary stats focused on crit chance and speed

Kanan: G9, omega'ed his unique, other abilities at level 6. Crit chance and 2 health sets with primary stats of protection/speed/protection/health...secondary stats focused on protection/tenacity/health/speed

Hera: G8, omega'ed her leader, other abilities at level 6. All health mods with primary stats of protection/speed/health/protection....secondary stats focused on speed/health/protection.

Zeb: G8, omega'ed his unique, other abilities at level 6. Potency and 2 health sets with primary stats of health/protection/protection/protection...secondary stats focused on speed/potency.

I did not use any of the mods from my arena team. I had one mode with a +9 secondary speed stat and all of the others had +6 or lower for secondary speed. So it can be done without any crazy good mods. Ezra had 184 speed and Sabine 178 speed.

Based on the above advice, I focused on getting those unique abilities omega'ed since they all share them through Hera's leader ability....this made a huge difference for me. My kill order was taunter, both DTs, other 2 Adds and then Thrawn. I used Hera's back-up plan, Zeb's honor guard, and Ezra's watch and learn to allow Kanan to handle all the incoming damage....combined with bumping him up to G9, he had good survivability. Getting Kanan's unique omega'ed was a big difference too as the increased team wide counter chance was a huge help on clearing enemies before Thrawn did too much damage. I didn't use much in the way of stuns from Zeb....used Sabine and Ezra on my assists to eliminate enemies quicker.

The event is way easier if you use chopper instead of Sabine. Having 2 dispellers gets through the taunts easier so you can start killing death troopers.

Thanks it helps a lot I'm hoping that I can get to 6* thrawn I probably don't have enough time to get them all up to 7* I got distracted with R2 and CLS