Re: 2.0 mixed setup (Barbarian, 2xWizards, Monk) and thougths...
More than a 4 set Innas which can roll shit, I'm more interested in these 2 items:
http://us.battle.net/d3/en/item/sledge-fist
http://us.battle.net/d3/en/item/the-fist-of-azturrasq
Those 2 are pretty much mandatory for high level Torment. I have a legacy Sledge Fist with 37% stun which is ok, but I really want the new one with 45+% stun rate. And the Fist of Az'Turrasq is just beastly. Palm on any minion and with the millions of HP they have, EVERYTHING explodes. I don't think anything can match that amount of damage. You can also mix a Sledge Fist with Azurewrath for Freeze + Stun which is great for CC too. Also a good Strongarm Bracers for the 30% damage for 5 seconds since Cyclone Strike is considered knockback (I have the 2.0 bracers only).
Inna's set has nice bonus but I'm not sure if that will be helpful for higher Torment. Maybe have 3 pieces with 2 pieces of Aughild's set and a Ring of Royal Grandeur to have the bonus for the 2 sets, or just go with Blackthorne's and have the party with Guardian and Aughild sets. Not sure yet.
I'm more focused on damage than mitigation since u dont really need that much when u kill fast. I don't see a point on going higher in difficulty since it's not very rewarding. I've done T5 with friends in high DPS parties and droprates were pretty much the same. Obviously doing 3 hours of T5 is not enough to gather droprates information, but still, if rates are higher, they are not noticeable. Items quality is exactly the same from T1 to T6, only rates are higher and those are not public AFAIK. Only exp is better, but thats not worth it IMO.
I'm all about getting the most amount of legendaries per hour and going higher gets me less drops per hours, so it beats the purpose. T2 should be as fast as T1, but T3 will be slower and give me far less drops. Until I have more DPS and eHP to faceroll T3, I'll stay in 1-2.