Its hard to see through my rhetoric about LFx (which I sincerely believe, while being a boon for some people with limited time, has been utterly devastating to the "social" experience of wow). I don't see LFx going anywhere, the genie is out of the bottle, and I dont see the "social" experience ever coming back so if we're going to be bedfellows then fine, let's do it right. The current raid paradigm kind of works. Why not apply it to all content? So you can spend 4 hours doing a true heroic 5 man and get a shot at what ... 4 pieces of 522 gear? If you're doing a normal 25 man you're getting more gear off the first boss. That said the 5 man WILL appeal to some people (I would be doing it right now and I have all 522 or better gear now ... and would ABSOLUTELY be in there on alts). They didn't think challenge modes would appeal to a lot of people either but they've even said the response has been heartening. People like challenging content, and they like challenging non-raid content. People LOVED the legendary rogue quest, the legendary staff quest in Firelands, this warlock quest, brawler's guild, etc. It's really fun to HAVE to use your class to the fullest. Even heroic raiders still leave 33% of their abilities at home, there's just very little call for CC or stuns or whatever that has a massive utility in a 5 man or smaller content.
Honestly those early weeks of Cataclysm when me and my fellow heroic raiders were struggling through 5 mans was awesome. Reminded us of BC. I am well aware that it was utterly terrible for anyone in the LFx queue and agree it shouldn't have been like that ... but at this point in the technology there's no reason we can't have our cake and eat it too. Honestly heroic scenarios and the fact that they are not in LFx is leading me to believe blizzard may be thinking the same thing.