Thrawn 7* minimum req. under Lvl 80. There's still hope little ones!

StormBlaze

https://swgoh.gg/p/775488546/characters/
Used basic arena recommendations for mods: http://apps.crouchingrancor.com/Mods/Advisor
All skills at Level 7 with the exception of 2 omega'd basics.

Ezra
Level 79 - G10 - 194 Speed - 14100 power - Omega basic

Hera
Level 79 - G8 - 190 Speed - 12500 power - No Omega

Zeb
Level 79 - G8 - 158 Speed - 12100 power - No Omega - 36% Potency

Kanan
Level 79 - G8 - 141 Speed - 11500 power - No Omega

Chopper
Level 79 - G8 - 216 Speed - 12000 power - Omega Basic

The key thing was to start the battle with chopper/ezra to clear taunt off stormtrooper and immediately get buffs off Death Trooper. Fracture has to be on Zeb/Kanan without using taunt (or he will die).
Save chopper at all costs. Let kanan die if necessary. Try your best not to taunt unless you can guarantee they will live, or can get backup plan before they do. When using assists, Hera/Ezra to kill someone, and Zeb if you can land the stun. I had low potency, so I couldnt rely on Zebs stun too much. Took me 50-70 tries.

Kill order: Death Troopers -> Healers -> Tank -> Thrawn

I had a Plan B, I wouldve been 80 before event ended and had omegas ready to use on all their uniques.

Good luck guys.
Thanks to @Yerff_Caasi
https://forums.galaxy-of-heroes.starwars.ea.com/discussion/165460/bare-minimum-for-7-thrawn-under-level-80

This was my motivation...

2smooth

Ur doing to much unlocked 7* g8 lvl 85 though as event came back and had been past 80 because I play game. Don’t think I was able to reach 80 in one month when I first saw it probably lvl 60s though where 7* isn’t even farmable possible maybe 5 max my arena wasn’t 6* and it included Ezra.