I think you’ve hit the nail on the head. I do actually do lots of GA flying but my playground is the UK exclusively (likely because that’s where I’m from). Also, there are very few areas of the world that are covered for GA by quality akin to that of Burning Blue Design. Perhaps Northern Sky but I’ve no desire to fly GA in Alaska or Hawaii.
I think Oz/NZ could eventually tempt me but, for now, I’m mainly an airliner flyer.
I tend to find add-on cities really make most of their impact at night, from an airline pilot’s perspective. From the left-hand seat, default PG can do just as good a job as a third-party pack (if you’re at a couple of thousand feet), but PG cities look really poor after dark.