Did it not occur to you that the size of these projects require loads of testing, more testing than any PTR could possibly provide, let alone pre-PTR release?? Do you not realise that the ultimate testing period for any new content is when this stuff actually goes live?

You assume you know everything that is going on at Blizzard atm. I'm assuming that most of their dev team are on Uldar right now, but when this goes live the bulk of the team will be looking at patch 3.2, leaving probably a few to iron out the bugs found in live releases. My assumptions here are most likely wrong, but I reckon closer to the truth than yours.

However I do agree with your comment about paying for an eternal Beta - not ideal. I've also questioned that maybe Blizzard might be slacking a bit because we are seeing a large number of bugs coming out, more than usual it seems. However I'm not a games designer. The mechanics they are creating are pretty new tbh. There are no games before this one for them to look to for ideas and solutions to bugs. I consider that some of this stuff is cutting edge and yeah, some bugs will make it to live. Maybe more than usual recently so ok, little poke at Blizzard to step up a bit more, but you can't expect live releases to be 100% bug free.