[@HHShetland]
I'm thinking of leaving non-human characters on the sidelines for this one (I have a feeling aliens will be exceptionally popular and the crew will be swamped with all sorts of creatures and it will turn into a alien melting pot as opposed to a platform for a series of diverse characters (as opposed to species) to interact).

I hope everyones cool with this decision. As for regular jobs, I'm narrowing down the roles to be as typical as possible consider this isn't a military cruiser specifically (like FIrefly, it is a privately owned ship, and thus there is no need to be armed to the teeth), so the roles I've come up with are Captain, Firstmate, pilot/navigator, medic, engineer and a couple of slots for "others", a few mercs are welcome, but we need to bear in mind that the primary angle for this rp is the relationships among the crew, of course their roles will change the dynamic of the character, but theres no need to worry about an army of tough mercs swamping the ship. 

It will be a diverse staff with a number of plot arcs to cater for each individual role/skills!!!

I hope this clears up some confusion here.