There used to be a big roleplaying scene here before from what I've heard/seen (I wasn't here yet then). However, that number has dwindled down to Light vs. Dark Trial of Heroes, the occasional Werewolf, and a few people here and there willing to RP.
I have seen some efforts to try to bring it back up, but most kinda just...stopped. Probably because of the lack of support from active RPers.
I definitely think there are a lot more RPers in the server than it seems (I know a few) but I think it's the lack of organization that's the issue. I think if a new Roleplay GM were to pick up the storyline and create something new and interesting, then it can start growing again.