* "triple-A MMO developers" being the makes of games like EQ2, Rift, LOTRO, etc.
This is a Blizzard problem. It's been a problem since beta, though ironically it happened far less back DURING beta. Blizzard is the only triple-A MMO developer that doesn't have their patch notes ready for the patch to go live. Leaving changes out of patch notes equates to the notes not being ready. How many other companies would accept such poor results?
Being a player of many MMOs and thus frequenting the forums of each that I play, I can honestly say I've never seen any of them push a patch live with incomplete patch notes and then ignoring the questions about the changes that were accidentally missed in documentation. That, however, is something Blizzard is known for, even among MMO gamers that have never even touched WoW.
Delay the patch a week to ensure you have all the details of what's going into a patch. Write of the patch notes, proof it, post it and push the patch. We, the players, would much rather see complete patch notes for a patch that's a week late, by a schedule we aren't even privy to in the first place, than to encounter "stealth nerfs" left and right.
I recall turning in incomplete outlines to my college professors and being told that was unacceptable, "redo it and turn it in complete, even if it's late". Again, I can't think of any other business that would accept this sort of thing with the frequency and consistency that Blizzard is guilty of.
I think you do a great job overall, Daxx, but none of what I've read here, or in any of the blue posts over the years about this, have ever made me step back and say "Oh, well I guess it's OK then". Because I look at other developers with less resources and staff that are providing complete notes with patches just as big.