Well, [@Nyahahameha], I think there are a few threads to recommend. If you feel that your world is "pretty small and closed in", the best way to expand it would be to spice it up with new stuff, right? 

I saw a guy, [@Letter Bee], put up a thread for a Mage: the Ascension Roleplay, which is a fantastic and cool setting, but he's worried about not getting enough players. One thing we could do would be to give the MtA RP a shot. The RP's premise is about the machinations of magicians in the Byzantine Empire in 1200's. If you'd like some intrigue and magic in a history-based setting, that's the one. 

Other interesting RP's are ones with Warhammer Fantasy (about the adventures of a crazy mercenary band), and one in a high school setting.
 
As for anime settings, I think I saw a thread for My Hero Academia, but I'm not sure how far it has progressed, and there was one for Naruto, but I think it is full now and doesn't accept new applicants. 

Any of these threads sound appealing?