Let's be honest, without a fair amount of thought, there isn't a whole lot to do as a civilian besides wandering through maint hoping you find a cultist or gateway exploring. So something I think would make it more fun to play is sort of an objective that would work similar to the AI ion storm laws. It would basically just add something to their notes that they should do over the course of the round. This could include something like, "You are a very tall midget and must assert this to everyone", "You worship a rival god of the chaplain, spread word of the falseness of their god", "You must actively seek out and repeatedly hug/throw/scream at all [inset race, gender, department staff, etc. here]", or something else that just gives them something to do.