@lotherio
Just an honest suggestion, but looking for a playgroup of only about ten people who you expect to pull double duty as storytellers on a single-crew ship is probably a call I'd put out among friends, rather than opening to the public and complete strangers.
That kinda seems like a recipe for some bizarre dynamics at least and disaster at worst.
If this were a truly public game, IMO you'd be better off coordinating multiple ships so that at least people could have some space to find a group that suits their timezone, playstyle, personalities, etc.
Maybe mandate that each new ship is obligated to have at least one primary storyteller and one backup, if they can't manage/don't want to Round Robin it.