1.who are the best partners for tarkin?

2. who is the best for thrawn?

3. is general grevious good in an deck?

4. is takrin elite/thrawn work good with each other?

1) 7th Sister is nice for Tarkin, the extra dice from the droid is nice and you can throw in a lot of blue stuff like Speed,Holocron etc. they have double blank sides for more chance to get identical symbols for Tarkin. Good events also. Anger and Manipulation etc.

2)Working on a thrawn Partner myself. There might be something with Mother Talzin . Good control and some interesting potential.

3) Grevious is considered underpowered for cost.

4)Mono colors have to worry about Kylo 2.

Grevious is at a cost that forces him to run as one. With that being said he is OK with Dooku or Kylo2.