With all the games I have played I still have not played Thrawn. Honestly Jerjerrod could work as well or better in this list but Thrawn is protection from Slicer Tools (or Cham Syndulla).
Name: Thrawn Rhymer
Faction: Imperial
Commander: Grand Admiral Thrawn
Assault: Advanced Gunnery
Defense: Planetary Ion Cannon
Navigation: Solar Corona
Imperial I (110)
• Grand Admiral Thrawn (32)
• Strategic Adviser (4)
• Boarding Troopers (3)
• Rapid Launch Bays (6)
• Leading Shots (4)
• XX-9 Turbolasers (5)
• Avenger (5)
= 169 Points
Gladiator I (56)
• Ordnance Experts (4)
• Assault Proton Torpedoes (5)
• Demolisher (10)
= 75 Points
Gozanti Cruisers (23)
• Bomber Command Center (8)
= 31 Points
Gozanti Cruisers (23)
• Hondo Ohnaka (2)
= 25 Points
Squadrons:
• Major Rhymer (16)
• JumpMaster 5000 (12)
• 2 x Firespray-31 (36)
• Tempest Squadron (13)
• Gamma Squadron (10)
= 87 Points
Total Points: 387
The idea being that Avenger dives in on my opponents big threat, triggers Boarding Troopers, drops Rhymer the Jumpmaster and 2 Firesprays, get a bombing run in on the hull zone I intend to target with Avenger to burn off Shields or at worst burn off their tokens completely. Then Avenger shoots and if the big is still standing Demo finishes it off.
There is a risk of being tabled by bringing only 2 brawlers but barring horrendous rolls this should cause damage and with Navs dialed in and a couple Engineering dials from Thrawn (or vice versa) hopefully someone escapes.