(To be clear, I don't mean a beta. I mean for discussion way before finished fic appears.)
And apologies in advance for the four or five posts I'm going to spam up your flists with this weekend. Blame Remix. And procrastination.
edit: There's a fanfic writing support comm on Dreamwidth called writethisfanfic. In case anyone wanders by and wishes this post had had more resolution. It seems to work like fic_rush, only never-ending and in slow motion. Their resources post looks great, too.