Overlord Norellicus wrote:
Speaking from pure speculation, healers aren't going to have a much easier time keeping you up when you take a string of hits from Rotface and can't dodge them because you're running away from the Unstable Ooze Explosion (which comes down too fast to backpedal out of).
Festergut with 3 inhaled blight can be pretty scary damage output too. BQ hits for 10k average. Both of these are dodgeable of course, just trying to reiterate that Icecrown radiance didn't somehow make dodge more important than it was before; you still should be getting your health up first and foremost, and let the dodge carry along with it. You don't have to go overboard, I still have a lot of Shifting Dreadstones on my gear to match socket bonuses for a little extra agility, but I'm still putting Zircons in yellow and blue sockets.
Here is a good read on the dodge aspect of ICC radiance. Avoidance is still strong but as Norellicus was saying you need that base HP before you can really do anything. 50k is needed in ICC, you can get away with high 40s, especially on the 1st four bosses but it really starts to matter after that point.
For gems I have a JC red in the shared weapon, Shiftings in all reds and most blues, I use 2 JC blues until I get a new weapon so I can change to 3 tank blue JC gems, and epic blues in yellow sockets. Dodge is still really good which is why I like have GoI, sexy armor plus dodge when I need it to help give some room for healers. I'll add epic Stam to blues if I feel then need beyond the JC gems. Reds will always get Shiftings just because I can and haven't really felt the HP boost would make a difference. Same logic behind a mix of JC blue, Shifting and Zircon in blue sockets.
Armor is hawt shiznit on most figths. We have *** loads of armor and Shiftings give us more armor, more crit to feed SD and threat in general. We have the option still to not gem for pure Stam and if needed Def, other tanks don't have that option beyond meta requirements.
Maz, this whole expansion beyond Naxx has been about HPs; near infinite healer mana has made it that way.