As I now see this again after some time 2 points:
1.would it be possible to make this a kind of sticky somewhere? That would make it more visible and easier to check.
2.Just got the idea: several railways themselves also run forums, could this perhaps also get its own post, or perhaps separate section in the overview on top?
Got to this as DB-community.bahn- died some monthes ago, but for Nederland there is community.ns.nl , quite lively, mostly of course questions from people unused to it or not able to find the info in the general site, but often also more as longer discussions from very well used long-time train users and their views.
Currently again in Thailand myself, there used to be even a part of general forum dedicated to trains and transit (also for Laos), but it was cut off some years ago and the most frequent contributors have moved to skyscrapercity.