Ok heres what i came up with. Play test em and tell me what should be adjusted. The cost might be a bit high or too low for one thing.
These cards play to table where your other pilot cards play but are NOT legal targets. Think of them as commander effects. The action on these cards is usable by your ships AS ONE OF ITS LEGAL ACTIONS. So for example Vader would be able to use Thrawns action on top of his 2 actions, unless he used a barrel roll this turn. SO for Thrawn its basically a free barrel roll action to the imps, for Ackbar the ship using that action takes 2 face down hits but basically gets a free critical hit on its target. So its like sacrificing your shields for a crit, which could be a fair trade off.