I let my characters idle into oblivion. The game was fine, I was just never able to RP. There's a set window of time where most activity takes place, and if your RP window falls out of it, forget it.
When I was available to RP in that time, and people agreed to RP with me, I had to wait 2+ hours for the friend circles to stop talking to each other before they went, 'oh yeah, someone asked to RP'. There was at least one instance where I waited 10 hours to find RP. I was proactive. I had ideas. I got 'sure, let's rp'. And then it never happened.
Unrelated to this game (again, I find no fault in it), perhaps the 'no one does anything' common complaint on MU*s is related to MUSHes being treated as extended Facebook/Twitter/Discord chat servers for friends instead of games.