I won't add my voice to those complaining about what is/is not available for download at this point, but I'd like to point out a couple of things.
The earliest concert available for download is from November 1972. Going through my favorites list, there are at least 10 concerts from dates earlier than that that I would really like to download. Is there a particular reason you've been offering these concerts in the Concert Vault, many since the Vault first came online, but haven't made any of the available for download? (I don't mean just the ones that are on my favorites list, but any concert from the earlier period.)
I find it interesting that of the 57
Staff Picks, only 5 are available for download. I suppose a case could be made that there are
roughly the same ratio of all downloads to all concerts (although the all downloads/all concerts percentage is actually 40% higher than the staff picks percentage), I would have thought that more of what the staff likes would be on the download list.