M9-G8 is, in my opinion, a perfect support droid, and has lots of synergy with weapons engineer. But there are only two ships capable of this combo, the ARC-170 and the Sheathapiede shuttle. As for pilots, I think Shara bey is the best carrier for the ARC, with her Target lock-sharing ability, and, being an ARC, can stand alone as a heavy hitter. But Fenn Rau is a good candidate for the combo as well, as his ability makes the reroll harder to fix, but being in a Sheathapiede makes me wary of the point investment.
What do you think? Am I wrong? Is the combo worth it at all? Discuss.