Yes, all of that, plus more. Writing fan fiction, just sitting and pondering, online forums.
I'm a Trekkie, and I stumbled across a site that had the extrapolated external dimensions of a starbase, so I calculated the internal. Took 2 years to refine it, off and on.
Those things are (would be) HUGE! A potential population of about 2,000,000 people. Deck space measured in hundreds of square miles.