I don't think it's that others aren't interested - it just needs a bit of organizing. I agree that it might help to have a list of who does the next panel, or maybe when a panel is complete, a member can post for the next one and they have three or four days to post it, or it goes to the next person who claims it. I think you'll probably have a lot of repetition of members - this is the sort of thing that appeals to some and not to others, and of course, most of us do have other projects and outside responsibilities.
I think it's a good idea, with a lot of potential - count me in. I'm much better at single images than series, so this is right up my alley