I have used Traya Sion DN SiT and Leia in phase 2. Seems like an odd squad, but the sith provide perfect cover for Leia... You can survive the full battle easily.... I am unsure if Sion takes damage when he counters with this squad.
I also use Traya in my phase 2 wampa team as a replacement for Hoda when he gets killed in phase 1... I do not use the Fett version but I think swamping Traya for Hoda in the boba version would work great.
Traya gives several benifits to the wampa team.
- Gives health steal up and Crit damage up when teammates hit an isolated boss.
- The boss cannot gain buffs while isolated(even during his turn), so sion will not taunt or gain offense up, making the battle much easier to survive. The boss can still counter, and because the boss cannot gain buffs he will never have the offense reduction affect....
- Side mods when they gain buffs will lose offense.
- For wampa the crit damage up can mean much more then Hyoda's offense boost, as offense boost has a negligible affect after wampa powers up.
- when Traya Isolates Sion he can reduce cooldowns on wampa or sabine... letting you power up quick. I would suggest targeting Sabine early so she can get more stacks on AS on before she dies (need to have sabine do AS, then use isolate of Traya's second turn.).