

Civilization 4 was good at launch. Naturally it got even better over time.
Worth a mention that 4 is the most recent of these games released primary on physical hardware. That meant patching was a more difficult process so they actually had to hire a bunch of play testers to test stuff (and fix the problems they found). Contrast that to the approach of the most recent three games, which had their customers pay $70 for the privilege of being beta testers.
This is a shitty way to develop games. We should be mad about it because we deserve better.
Regarding the future uniforms, the same uniforms appear in most portrayals of “future starfleet” during the TNG era, such as DS9 The Visitor. I don’t believe they are meant to indicate a connection between alternate futures beyond being the next step for Starfleet uniform designs (although the uniforms shown for a similar time period in Picard turn out to be different anyway).
Regarding your question more broadly, yes. And also no. Both, really.
I’m not sure Q recognizes or cares about the distinction between spinning up an entirely bespoke simulated reality for Picard to do his thing in, versus altering the past such that branching timelines are created and shuttling Picard’s consciousness between them before ultimately closing them off. Or whatever other myriad mechanisms an omnipotent being would have for triggering the events portrayed. Nor is there any real way for us the viewer or Picard the participant to distinguish between those things. What is real, what clearly matters both to Picard and to Q, is that Picard did pass a test, and that Picard remembers those events in a way which will influence his future actions and relationships.