[Phlagm]

I guess it depends on what your quests look like, and how involved you want to get with making them ship-specific. I would suspect that you'd be able to work out something with each type of ship. You could even do a medical frigate (although I'm not sure how distinct it would be when viewed from above) and then have a bunch of medical quests for it. Bounty hunter is a good one too, and you've got a while mess of bounty hunters to choose from in the movies.