Not every god damn thing revolves around antags.
Bridge hoboing is weird, it's like... why tf are are you cleaning floors in bridge hallway, when your station is equipped with areas to ACTUALLY spend time in. It's odd to me, I don't like it, it takes content away from service department. Personally, I don't really care if mr. antag man has harder or easier time, as it's a SECONDARY issue.
Okay, back to the topic.
I would love if you could set the job titles!
"Assistant" is extremely simple and shallow title. Having titles like "Retired" and "Off-Duty" would be very fun, and would positively contribute to character arcs.
Having an "Intern" job title would also be very cool!
However, not sure if Assistant as a title should be department-specific, having an "Engineering Assistant", while cool, would honestly change nothing. People will take it cuz it sounds cool and do nothing with engineering. Leaving it only for HoP to set is probably better.
"Tourist" would imply you are not hired by NT. If they had no paychecks, it'd be cool. Doesn't make sense otherwise.
"Civilian" is maybe better, tho it's also even less deep than "Assistant". Woouldn't hurt, but also not a fan.