Bored of Sith. Minimum to switch to JTR+Holdo?

I found Holdo made a much better tank than Nest, plus she gets turns from JTR. Nest is good if you just want a damage sink when it all goes to shit, but I find Holdo synergizes wonderfully with JTR, R2, BB8 teams. I can end up in the teens if I play all 5 attempts every day.

That said, I routinely fall back about 50 places on PVP day, which is probably because I use Rose because she's awesome to play with but not much for defense against a speedy team.