I know that Attack Wing is a swear word on this forum, but mixing and matching captains (pilots) with different ships is tons of fun. I for one would love to try to use Vader as he is written and put him in a Fire Spray or a TIE Interceptor.
It wouldn't be very hard to figure out how to make homebrew rules. Just take any pilots point cost from the cost of the skill 1 pilot. Take that number and add it to the point cost of the skill 1 pilot in the new ship. It wouldn't be suitable for tornamant play but it is likely not to very balance either.