Over the last 12 months I have made on-and-off attempts to dive back into Mushing, but I have noticed a culture change since the days of yore. Gone are the days where you can hit the grid and randomly find public RP, and interact with people you won't normally socialize with. The spheres are now more insular. RP, when it happens, is primarily private. OOC chatter is the new norm. Stories and plots only take place at scheduled events, almost disconnected from "normal RP". Somewhere along the way, the spontaneity of RP and story has been lost.
I hope this trend turns around. I say this not because I'm an old-timer longing for the 'good ol' days', but realistically in a world of flashy MMORPGs and other entertainment options that offer instant gratification, Mushing needs to be more welcoming and more exciting to stay competitive in attracting and retaining players. Falling into the role as a glorified chatroom is the exact opposite of what this hobby needs to be.
Personally I've stopped trying. It's a bit sad and disappointing, but after 20 years Mushing has lost that spark of wonderment for me.