Open-Source Scientology is really an oxymoron, as the S-word is trademarked by you-know-who and the subject itself is (falsely) declared to have been solely developed by Hubbard.
But to take up Mark's point, I asked what would be the interest in open-source Scn apart from losing the copyrights and trademarks. His two-word answer doesn't reveal a great deal of his thought processes here. Except maybe the idea excites him terribly as he normally goes on for paragraph after paragraph in every post.
NEW BOOKS. This could mean revising the shit out of the existing ones, to remove the garbage and leave in them what is plausible or at least vaguely defensible. Or it could mean bringing out new stuff that is worth putting into a book. An example would be Ralph's Super-Power issues and supporting documentation, the former of which is readily available online and the latter isn't.
But who would be accepted as being in charge of this kind of thing? Pierre? :D Iffy Mike? We're back in CatHerdistan.