I just completed the Thrawn(tier 5) event with:
5* G7 Ezra
5* G7 Hera
6* G6 Zeb
5* G6 Kanan
5* G6 Chopper
(I'm also surpised how I got Thrawn with mostly G6 team).
I was told by my friend that I can also use the Phoenix team for Emperor's Demise.
If I can, any advice on how to move forward(example: Gear up Kanan, promote Ezra etc)