Count me as someone pleasantly surprised by the quality of this post-mortem.
Personally, I was very excited by the way Cataclysm began and am pretty disappointed as to what I consider to be an anticlimactic ending in terms of the DS raid, the latest "heroics", and the one raid per tier pattern that has emerged.
For the sake of the game and the community, I hope that Ghostcrawler can achieve his objectives.
This sums up almost perfectly my feelings about the expansion. When Cataclysm first came out, I was thrilled, it addressed pretty much every single complaint I had about the game in Wrath of the Lich King. The 4.0 heroics were, though frustrating sometimes, generally so much more fun than the Wrath ones (and the new HoT ones). I really enjoyed them. And, it's weird to be called an elitist for it, because frankly I always considered myself, and still do, a very casual player. I really don't have the time to raid a set amount of hours every week, so I really enjoyed being able to log on and enjoy content that made me think and pay attention to the mechanics.
That said, I had a lot of friends that were frustrated with it, and I really did sympathize with them. It was much more of a challenge than they were used to and they had people say awfully nasty things to them. Honestly, if I really was going to point my finger and blame someone for the nerfed heroic model, it wouldn't be at the people who had difficulties with the dungeons, but at the people who refused to explain it to them, kicked others at the drop of a hat. They made the dungeons unenjoyable. So, I really don't mind the addition of a raid finder or even the existence of easier heroics, as long as the challenge modes provide something to those of us who really enjoy dungeons and raids with harder (but still fun!) mechanics and not just a time trial (in my opinion, that isn't as much harder as it is a pointless DPS race).
Ghostcrawler's post itself was great. I was sort of scared after the last one that Blizzard had just decided to make everything easy. But, this post really showed that Blizzard still is thinking very deeply about what changes are made in Cataclysm. I am really sorry that an Abyssal Maw raid didn't make it in, but I understand why. That being said, I really hope something is implemented there again in the future and I would be so excited for it. Furthermore, though I was perfectly happy with Cataclysm's talent trees, I completely agree with the way they're being revamped with MoP. As someone whose job involves lots and lots of math on a daily basis, it's nice to take a break from it in game. Plus, it's exciting to see that the fundamental concepts of the game are still evolving. Great post!
P.S. Ghostcrawler was an oceanographer before a game designer? He is officially the coolest person on the planet.