I decided to do a round of random heroics in Beta yesterday with an 85 premade paladin in full raid gear. I have to say, we were still not able to just steam through them, but they're a lot easier. We were able to forgo some of the mechanics that would otherwise be deadly in pre-raid gear, such as Rom'ogg Bonecrusher's "The Skullcracker." I have a feeling that by the time we get to Tier 12, it will be LK steamroll all over again. I think that this is fine, though, as the point of heroics was to provide a "bridge" between tiers. It's kind of like Trial of the Crusader being a bridge between Ulduar and Icecrown. Hopefully, Blizzard will implement a system of only giving the highest level tier points through raids, so that we don't have to suffer through farming daily heroics on sleep mode again.