For the last couple of weeks I've been running Rex (L), Talzin, Wampa, Shore and Ben.
Shore is an absolute must, just for his pre-taunt (reduces JTR teams options against you) and for Heal (critical against those NS matchups). I'm still experimenting with Old Ben, and sometimes on offense I place Thrawn instead of him.
Here is a video I posted on reddit with this latest combo I'm running.
https://youtu.be/B8B2rHVzhz0
All matchups are auto-able, and very easy wins on manual. I barely fall to 6-7 overnight as people tend to avoid the Wampa-Talzin combo under Rex ... Very difficult to have a team that counters both, especially with Rex giving tenacity up and 2 taunters who can heal too.
I'm a couple of weeks away from unlocking Hermit Yoda too. I'm wondering if HY + pre-taunting KRU can replace Ben and Shore, but for now I'm extremely happy with this team. Thinking of giving Talzin her unique zeta and getting the last zeta for Wampa too.