I wish I had the time, skill and ear to do what Steve, Nite Owl, Dagdad, Winston and others have accomplished over the past few years. If the gravy train stopped now I would not complain, what we have is beyond what I would have ever expected (I've been collecting since the late 80's). And all for free no less. My jaw drops every time I listen to SIBLY on Nite Owl's Vienna project. I simply cannot believe multiple AUDs were used to created a stereo image like that. DAMN.
If I had the proper programs and knowledge, my choice for an attempt would be Seattle from the 73 tour. There are now two clear AUDs (one a stereo tape that was an early bootleg classic, the other is a gorgeous mono capture that was recently re-transferred and upped on Dime), and a partial soundboard. Imagine using Steve's skills to divide up the SBD into multi-tracks and then Nite Owl using his/her/their matrix skills with the SBD parts and AUD sources. Oh ya, that would be fantastic if it could actually work out. That's the thing I suppose, you need the right sources that compliment each other, so it's not just a matter of using every available source. I think there is a good amount of luck in the mix as well.