Didn't read through all the 11 pages of posts so what I say might have already been said.
I consider myself not really hardcore, I have quite a difficult study and have to work next to it to be able to pay the bills. I consider myself quite skilled though. That is why at the end of Cataclysm with the last 2 patches (Lich King Citadel and that stupid tournament ground) I simply didn't enjoy it anymore as it was way too easy. I don't mind spending hours, multiple times a week, if available trying to tune down the strategy for a boss. So instead of giving MORE content for level 50. FIX the current content atm to make sure it is interesting. I mean why keep playing if you get all the loot of the new operation on Day 1?