So far the best team I have managed to build for phase 1 of AAT is a rebels based team which can do around 700k damage. I have tried an Ima lead team and have had lack luster results around 300k. Curr...
Don't build for P1, you'll help your guild most (if it needs it) in P2 and P4. And also if you want big scores, so I echo the Resistance team sentiment. With decent RNG I have been able to get 6 mil in P2 with everyone being g10 except Poe.