As someone who strongly believes that most, if not all, fanfiction is legal, I'm very excited about OTW. Whether or not we "need" a multifandom archive, it will be very nice to have that resource available
Ha, you sound a lot like me. I tend to think mostly about the legal side of things, and it's only as an after thought that I remember the archive part. I would enjoy having a big, well known multifandom archive that isn't ff.net though, for those times I have a one day desire to read fic from a fandom I'm not in, or one that's really small/rare.