Just wanted to give a heads up about it to other would-be droidragers. My Poe and Poggle are still 4*, and dropping Lumi and Han improved my rank from 70s to 20s, but I just my butt handed to me by a 7* Phasma led Lumi Daka Dooku Sid. My Poe and Poggle went first, and that team didn't care at all. My hk is 5*, 88 is 6*, and 86 is 7*.
Just posting as info as this is the characters and strategy section.