Hello there! (Yes, I dropped right in with a Star Wars reference.)

I was wondering a few things, most importantly if you guys still have a spot open. Besides that, a few mechanical questions:

1. What would qualify as a 'ship'? For instance, would someone be able to play a starfighter of some sorts? Would probably be somewhat underpowered in certain ways, but could make for some fun interactions.
2. What would the interactions be on a personal level? Would we control every single crew member of our own ships or only the ships themselves?
3. To what extent is it allowed to pick a ship from the Star Wars universe, seeing as it is the main universe. Would it be allowed to use ships from different eras, or maybe even fan-made ships?