Branching off from my post in this thread , let's consider an upgrade that allowed you to take both the pilot and crew version of a character. Something like Clone Tech (there's literally two of them) or Multitasking (they can turn from the main flight controls and handle another system that gives them the crew ability). I think it would have to be limited to a single ship with a crew slot -- we're already stretching thematic plausibility here, so having Luke on an X-Wing AND on the Falcon would be a little too much -- and I'd say it would have to reduce the PS by a good chunk to account for the divided attention span, at least 2 or even 3 points. The drawback -- aside from the extreme broken-ness of some of the combos (Dash/Dash being particularly evil) -- is that it tilts heavily to the Rebel and Scum side of things, since there are no dual pilot/crew combos possible for the Imperials.
So it's an insane idea and will never happen, but I'm not ready to get back to work this week and this is where my head is at.