As someone who played a shaman for two years in vanilla WoW, I'm happy about the hybrid changes. As someone playing a warlock now, I can't help but scratch my head at some of the stuff I'm seeing in game.
Last night, for example, there was a guy that I've had successful pugs with in the past trying to run SP, a dungeon I'd love to take my 65 lock through. They've got a warrior, a paladin, a shaman, and a hunter. They're LF1M, so I send a tell to the leader, a guy on my friends list. Sorry, they're looking for a healer. Huh? I watch him spam the LFG channel for half an hour before he tells me he's given up, and the group has disbanded.
I understand not being crazy about healing as a hybrid, but wouldn't you rather heal in an instance than not run it at all?