I would suggest a dedicated point to point only forum edited specifically for design, constuction and operation of miniature railway systems following prototypical form and function.
Loop running is very big and maybe 75% of my work load however personally I find it can lack substance. Even our live steam club is repetitively boring simply going round and round. Sadly as of late, there is now posted photos of a wedding cake of loops.
IMO, the layout forum is working well right now as is because there is expressed need and sharing actively going on with good follow up in many cases.
It's just not what I believe was intended.