The collaboration of writer and artist sounds intriguing, but I'm thinking about what I'd do, as a watcher/reader if I were faced with a story that I really liked/thought was well done, combined with art that I didn't like/didn't think portrayed the story well...and vice versa of course. Unless the total score for the collaboration had a break-down, but that would probably get complicated. Just a thought.
There's also a timing issue I wonder about. I'm looking at this from the writing standpoint, y'know, cause I can't draw worth shit. If I take the 8-12 weeks to write, change things at the last minute (which is known to happen), then where does that leave my collaborator? I guess that the association between fic and art doesn't need to be that precise, but it's another thought I had. I have absolutely no idea how long it takes artists to do what they do, but they probably want as much time as the writer would have.