I don't know why, but Magmaw in particular, we've typically had trouble with a mage that gets fairly high threat before the first add spawn (maybe because the boss doesn't move, he ignores the threat warnings?). He even pulled off the warrior tank a couple times before I took over the tank role for this boss in our raid (self healing is a big help during mangle). Even I have had him get over me on threat, but not high enough to pull.
This week, no one got close to pulling threat, even though his (and a few others') dps was higher. My hit is below 1.5% in my current gear and I was getting extremely annoyed at how often I missed CS for no HPo gain, but no threat issues.

I've never had threat issues apart from at the start of a fight. Magmaw can be tricky though due to the insane threat generated during the head phase. Make sure you get a good lead and you will be fine, tricks and MD's help alot at the start of any fight especially with the recent changes in 4.0.6.

Unfortunately it just isn't possible to take Hallowed Ground in a 0/31/10 spec without sacrificing a much more crucial talent. This spec is extremely tight and the only leeway is near the top of Prot, which doesn't get you far enough down the tree to consider HG. If you want to use Holy Radiance on cooldown, you just have to be conservative and hold out for consecration >75% mana only.
This is a surprisingly controversial subject, but I am almost certain the end of the burn phase results in a threat wipe. Melee are frequently smacked heading back into P1, which you could write off as an aggro pull due to 2x damage; however, I've also seen healers take a single melee swing just as P1 restarts, which would definitely not happen unless a threat wipe had occurred. I've encouraged folks in melee range to keep it in their pants as P1 is resetting, and we haven't had random melee gibs in a couple weeks.

Magmaw resets threat only for the MT during Mangle. The top threat when I taunt after a head phase is invariably a ranged DPS with a ton of threat; he's simply meleeing the first person to wander into range. So I can't really see how you'd have trouble with head phase threat since even a solo tank strat has you taunting the boss immediately afterwards.

/script DEFAULT_CHAT_FRAME:AddMessage("Need 102.4 combined avoidance. Currently at:",0.8,0.8,1)
/script DEFAULT_CHAT_FRAME:AddMessage(GetDodgeChance()+GetBlockChance() + GetParryChance() +5+(GetCombatRatingBonus(CR_DEFENSE_SKILL) + 20)*0.04,1,0.5,0)


this is what i found to work

Explain to me if I am wrong, but rebuke is a spell based interrupt not a Physical based interrupt. Even though most paladins aren't reforging / gemming into hit cap, rebuke should be covered because we have touched by the light

With defence skill removed from the game could that throw the math off? Or will it just return a 0 an not effect it?

If I remember right Rebuke was placed on the melee hit table and as such required the 961 hit rating.

Quick thought I'd like confirmation on. Pre-heroic modes it's considered by many to be optimal to fully CTC cap. This means survival stat priority is Mastery>Dodge/Parry>Stamina. By this logic the sockets should be filled (assuming relevant bonus) yellow=Mastery, red=Mastery/Parry. blue=Mastery/Stam. Of these yellow sockets provide the best CTC, red 2nd, and blue 3rd. It stuck me as counterintuitive that a blue socket is actually the worst and all other stats being equal we'd prefer any other color socket to maximize the value of the gem towards block capping.

Then once we hit heroic modes Stam becomes more important and stat values change, as well as the ease in hitting CTC cap allows us to move away from stacking mastery and move more secondary points back into avoidances. But before that, are the guidelines above roughly correct?

I've been searching for the past week or so on whether or not you can still Bubble off Raid Debuffs. I've been on a couple of bosses where it hasn't cleared the debuff or I'm just using my /cancelaura macro way too fast or something. But I know for a fact that after finally downing Cho'gall, trying to bubble off the eye-beam debuff, it didn't ever go away. Did they do something in 4.0.6 that doesn't allow us to remove raid debuffs any more?

You won't be able to reach CTC pre-heroics. You're also better off reforging dps stats into CTC stats than reforging dodge/parry into mastery, though some might disagree.

It's also a lot easier to swap to stam trinkets for the fights they are most useful than to regem an entire set of gear. And you still won't be experiencing "ease in hitting CTC cap"

You cannot remove Break on Chimaeron either.