Well, I have the box set in da house now. Must say: remastered sound is excellent, very very good, so much better than the earlier cds. And there is almost exactly half as much bonus material I think, which is well chosen.
So far the biggest rush for me is hearing the acoustic demo of "Weather Report Suite" done by Weir and his 12 string (?) alone. Man oh man. That suite is my favorite music of the Dead, period, (I don't think this has anything at all to do with Wayne or the WR band, and is all the better for it) and to hear this seminal recording is a thrill!