JabbaTheMutt so I built one of these Friday night, on this host. Took me an hour to get it up to speed and post and have working permissions. I did it to see what was involved - no real intention of doing much with it. Was gonna offer to allow 3-4 of you to play with it and make it ours. But no need now. You’ve done well with it.
Are you considering enabling private messaging? I did but never tested it. Also consider the page turn or page count limit etc. one endless page of posts is tedious IMO.
Personally I think a lighter default color scheme is best, it can be tough to navigate an unfamiliar screen with unusually dark theme.
Also where are the tags to choose from when making a new thread?