I do think the vogons 'culture' in as far as that exists does suit a programming forum. Other forums are slow to the point of oblivion (page down on them and check the last update date...), stackoverflow isnt really a forum its a q&a.
I also think there is a huge scope for 'vintage programming', it isn't just 8086/DOS minutiae anymore (though i like that!)
in the same way that the era of vintage moved onto somewhere in win xp era for many so the vintage programming now covers everything from cp/m days up to later win32 days
and it should reach from very technical to fairly simple, from creating a low level tool in assembly to having some fun running things in qbasic or VB
there are lots of existing applications that could be ported back to dos or win32, an ever increasing wealth of software with sources
resurrecting and talking about old and perhaps forgotten development tools would be interesting too - there's borland and ms offerings but who remembers moonrock basic, pacific c, vpascal ?
then there are all the old game maker tools that were made for DOS and earlier windows
hopefully more than enough to keep things going 😀