It's been a while since I was a RPer, but I've been inspired to come back and maybe make a site.
A site inspired by the Seven Deadly Sins Anime/Manga. Different races, a war like plot. People encouraged to kill off characters in order to get the chance to make a rare species - you can add your own species to the list if you want something other than what is currently offered. 

There will be cannon characters that people can adopt and drop. If they aren't a PC they will be just NPCs to help out with any site wide events, played by staff so they aren't forgotten. Cannons can die, and players can put their characters they lose muse for but are important to plots up for adoption as a cannon (kind of like a site donation, only if the payer desires too, no one will push).

Yes, yes there will be cannons up for adoption that basically IS the seven deadly sins, just tweaked so people who never seen the show won't be lost. Everything is inspired by.

Low ranking demons can be played by anyone using an NPC account for people to fight. 

A reputation system will be in place, so as characters involve themselves in skirmishes, be a part of site wide events, they'll have a "popularity" like meter that indicates how well known they are to other characters. Like celebrities sort of thing. Not a how long you've been playing, or how many posts you crank out, but just how often you are a part of important plots and what not. Other ways to gain reputation too will be there (I won't divulge all my secrets here and now).

Kinda the main idea said above - obviously there's a little more to it but heck... it'll be too much to write