I think the hard part is that some fandoms are really LJ only and there aren't any big archives for the fandom. Wraithbait for SGA fandom is kind of a rare exception for newer fandoms. I can't even think of one big Merlin efiction based archive. Star Trek at least has the Kirk/Spock efiction archive but there are a lot of Kirk/McCoy fics out there and I have no clue if people are archiving those somewhere else.

I think my main focus has been to try and let more people know why PDF isn't the best ebook format. That and trying to convince more authors to also post a single file version somewhere.