Honestly, I don’t blame Verticalsim. BNA is nowhere near “done” with all the upgrades, changes and improvements. FeelThere’s current rendition is at least relatively accurate as of Jan 2024. But the coming couple years will see the extension and rotunda added to Concourse D, the extension to Concourse B, the extension of RWY 02L/20R, more taxiway changes and an entire rework of the road connections.
If he does KBNA at all, he’d be better off waiting a year or two to see how things are coming along and if FeelThere has updated theirs to match current developments, and if not, targeting it for MSFS2024.