Brilliant, Blizzard, just brilliant (said with every possible nuance included).
I would consider Blizzard's latest incarnation of daily heroics a raging success. LFG was starting to look like a true ghost town before 3.2. Often, the entire lfg interface had one or two people in it. Now, at least for the daily heroic, it never takes me more than a few minutes to get a group. People are motivated to do heroics, they usually go very quickly unless you're unlucky enough to get a fail group, and the rewards feel worthwhile.
RAID DAILIES??? (Weekly). Wow. We're going to feel compelled now to run Ulduar/Naxx/etc again every week, at least up until whatever boss it is we're supposed to be killing. It will make lfg for these instances viable (at least up until that target boss) in a way that it's never been before. Shoot, my guild will be doing Naxx at least a couple times when it's the weekly - for mains and alts... ugh another time sink. And, yay! A nice way to keep old content interesting and viable.