Yeah, the other fandom-specific remix my friend and I did a few years ago was for hobbits, where there are a lot of gen-only fans and some really strong shipping preferences (like some people seriously squicked by some pairings and others who feel bad for having their favorite pairings called squicky all the time) and we really wanted to get more people to sign up, so we wanted to reassure people they wouldn't have to write anything far out of their comfort zone. But I tend to think of Merlin fandom as being really easygoing about pairings, and even the folks who only write Arthur/Merlin don't usually have anything against the other ones. So, we'll see how many people are interested and how they feel about that once it gets closer.

I'm so glad to know this will work for you! I've been communicating with woldy a bit too because she really wants to remix Merlin RPF and that's not one of the qualifying fandoms at RemixRedux. Will probably need to do some serious pimping to get that to work though because I only have a few Merlin RPF writers on my f-list.