This patch dropped into our laps a few days ago, bringing with it some forms of agony, least of which are the protection tanking changes.
No... The major source of pain is due to the changes to the T10 chest and glove pieces. Having lost their defense and dodge respectively for better armour, this presents a huge problem for progression tank gearing. If you, like me, have already bought one or two pieces of the tier, and are disappointed with the changes, don't worry, you're not alone.
Having already bought the helm and gloves for the 2pc bonus, I went to take a closer look at the T10.264 vs 264 Frost items; my gearing plans already thrown out of whack. My conclusion? The 264 offset pieces are superior in EH due to that extra socket, while the T10.264 chest and glove pieces are slightly more avoidance oriented.
Now, I don't know about you, but finishing the 264 offset pieces are now my highest priority, with the chestpiece and gloves left for me, while I will wear the T10.251 helm and shoulders. The offset chest and gloves will only finally be replaced by the T10.277 pieces, with the crafted pants, the Pillars of Might, staying in the leggings slot.