A sort of anti-R2D2 could be fun:
D2-R2: When this ship takes stress, add 1 to your attack die.
That could be nightmarish on Y-Wings and PTL Corran Horn. I like it. Especially since, as worded, it adds dice to secondary attacks. So: Extra Munitions + Proton Torpedoes + AR2D2 on Horton gives him 2 5 dice attacks per game and rerolls on those attacks. That's a respectable threat.