Re: How many staffers does a superhero team need?
Generally none . . . but realistically? Jets take special mechanics, the hydraulic lift for the jets take special mechanics, etc. Who does the grocery shopping? Who takes in the newspapers when they're out saving the universe? They'll need gardeners, housekeepers, docents for the museum, janitors, a butler to manage it all. And they might all need security clearance, or at least background checks. And security. Yep, security! When one is out saving the universe, you don't want your second-best watch nicked.
It'd be like a small military base combined with a hotel. Say an Escort Carrier full of folks.