foibles

That's where virtual reality setups are supposed to have an advantage, at least in terms of not seeing your furniture.

If someone has planes that they really liked in previous versions that are not offered in the default new version.

In past versions it has been possible to import aircraft models from older versions into the latest version. Is a method of doing that available with MSFS2020?

In past versions of the flight sim, the most annoying immersion-breaker for me was the way that autogen would just pop up out of nowhere very noticeably. A more realistic experience would be for the autogen to have been generated in memory before the area became visible, so that the details of a new area within visual range would gradually become more distinct, making for a smooth, naturalistic transition. Has this been fixed in the 2020 sim?

I don't know, but someone mentioned something about "Ability to instantly teleport to any airport in the world" in the developer mode. Not sure if that helps. https://www.flightsim.com/vbfs/showthread.php?324180-Switching-to-developer-mode-has-more-goodies