Consensus for creating the largest RP (P.L.O.)

[Aetherius Pendragon]

Alright, so I am trying to find the best Idea to make a Roleplay under, and probably a RP guild, but I need to know, from the most active of you, what the Best RP would be to make.

I would like for you to give me a Category, and a Type

ex//

Supernatural - Vampires (Although, it is often RPed as. but if you like it, put it up.)  

[Aetherius Pendragon]

I understand the Rules. I just hope this can remain here for a couple days, and then have it moved. And sorry for not asking first.