Now Wingmates do suck, but they only benefit you on missions that only have something to do with tie fighters (maybe bombers but doubt it). Use the command on only these levels if you wish to benefit them:

-Death Star Attack (on the 2nd phase of the level)

-Ison Corridor Ambush (probably only the first phase since A-wingmates don't got a lot of power)

-Vengeance on Kothlis (its optional but its risky too if you want to destroy the ties fast so you can take out a good chunk of ground troops early before the transport lands.)

-Battle of Endor (till the bombers arrive)

Why not Raid on Bespin?: when my wingmate destroyed some of the fighters the game didn't count them as necessary points for some reason. the game wants you to destroy them to make them count.