Battle trance won't do you any good. With it only proc-ing off SS, which is every 6 seconds without a SnB proc, and then it's a 15% proc chance with 3/3 talented, you're not going to see any rage improvement.
*****
http://us.battle.net/wow/en/characte...agnix/advanced
Gems:
Hit cogwheel = dodge (probably)
Blue = Mastery/Sta
Yellow/Prismatic = Mastery
Red = Parry/Mastery
You have a number of very easily obtainable upgrades, they can simply be bought.
Neck =
http://www.wowhead.com/item=57932 (JP vendor item) or
http://www.wowhead.com/item=56319out of heroic blackrock caverns
Shoulders are tough: Options are all drops. But the sta/dodge enchant is a vendor item. Therezane rep
Cloak:
http://www.wowhead.com/item=62383 Mt Hyjal Exalted
Chest - Great option - but mastery should come from Expertise, not parry.
Wrist - BiS sub raiding
Gloves -
http://www.wowhead.com/item=58105 <- JP purchasable. Use the mastery enchant over the expertise enchant. Current gem should be parry/mastery
Waist - Gemming mastery/stam would be equal to pure mastery like you have. your choice.
Legs - Clear you're trying to get the most you can out of your DPS legs. Not horrible at all with all that mastery, but obviously you're not looking to reforge it every time (or else the hit to dodge/parry if you will reforge as needed)
Rings - 2 purchaseable rings (crafted + therezane) that would be as good as any other 346s for tanking:
http://www.wowhead.com/item=52320 (crafted - have a JC alt or guildy?)
http://www.wowhead.com/item=62351 (Threzane)
Soulblade - Hit to dodge/parry
Trinkets are tough, but if you do the TB dailies -
http://www.wowhead.com/item=62471 to go along with the crab.
Range - good as nearly all, if not all. Range stinks for tanks.
With your current gear and some of the choices you've made that represent big investments (chest/legs) you won't be able to drop all hit/exp, so it may not be a full 7%, but it will be much closer to 7% than you think.
Your threat will decrease a little, but with a good rotation, 3/3 deep wounds, and marking kill priority, you shouldn't have more than an occasional problem (and then with overactive pugs).
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