Since there are limited spots with lots of interest, I have a question, or, well, several. I assume we'll be on a ship of sorts as our base of operations, so I assume we'll need a pilot and medics.
If that's the case, would you be against one of us making something like a medic or the ship's pilot? Kind of like a secondary character or crewmate who didn't go on missions, but you could talk to and interact with? I wouldn't mind making someone who usually stays in engineering or the medbay if it gives other people a spot to participate more frequently. 

If not, I'll just stick with what I have planned. But it would be cool if you made spots for things like that, that way everyone who makes an app could still potentially participate, even if it wasn't what they originally wanted by making someone like an engineer or pilot or doctor for the crew. Maybe an informant or shuttle driver.