Unfortunatly I don't have the IE Xizor...
My thinking with using Imperials is that Tarkin gives the TBSVs an extra attack, so they can take better advantage of their GMA. Prince Xizor, cool as he is really isn't worth the points is he... See, I had Arica there becaue he gives her accurate, and Accurate Blaster Barrage is very appealing, but too expensive.
What about;
32 (Mith)Thrawn
22 Imperial Governor Tarkin
08 Mas Amedda
36 Twilek Black Sun Vigo x2
20 Bith Black Sun Vigo
13 Czerka Scientist
13 Jawa Scavenger
15 Lobot, CLO
23 Emperor's Shadow Guard
10 Caamasi Noble x2
08 Gran Raider x2
200/14 activations
I know it's a little lacking in power, but i think it could be a real annoying squad to face under the right circumstances. I think the shadow guards are great with Thrawn and the vigos, +12/30 damage, Evade, GMA. The Jawa is there to take care of any lancers I come accross.
Any better? I know it'll never be a tier 1 build