World Nexus Bounty Hunter Association (Pre-Planning/Interest Check)

So the idea that I have is relatively simple, and hopefully, it'll catch on with the lot of you. Essentially, my thought is for a massive cross over RP, in which original characters will act as bounty hunters, who track down, and eliminate various canon characters within their respective worlds. For example, we may decide to have one world be The World That Never Was, and have targeted characters be the members of Organization XIII. What this RP will need is a few players playing bounty hunters, as well as players controlling the marked characters (A single person may control multiple marked characters, as they will be played as assigned). So if anyone is interested, I'm open for any, and all suggestions for worlds, and marked canon characters to have for those worlds (they do not have to be limited to FF and KH).