I think people need to get over the fact that SGU is not just about the military and scientific advisors. It's a different dynamic. It's no good complaining that the civilians are useless and pointless. The point of the civilians IS that they are pointless in the current situation. That's partly why there is a power struggle they want to feel that they have some control over their destiny (no pun intended). I do agree that they need to be given story elements that do not just involve butting heads with the military.
If they are not scientific advisors and engineers why were they brought in on the secret and flown to the Icarus planet in the first place? A mobile brothel for the gate guards?
Well, the senator was there doing an inspection wasn't he, presumably with an entourage of admin/oversight committee staff? There aren't that many civilians that aren't scientists so it's entirely feasible that this is where they are from. Ordinarily though I'd agree that your admin staff, cooks, etc would all be military personnel.