I would think it would be 9778>Mast>Haste>crit
Mastery becomes a much stronger stat since most of our damage comes from our DoTs now. Especially with the rppm change and moving away from MG casts. The 9778 haste breakpoint is likely the one we'll want to go with since we'll probably end up getting to it anyway with how the gearing will work.
Crit is still low, even with the bonuses. Even with 20-25% crit raid buffed, you'll still manage to see it proc every like 10-15 seconds, and with even more gear comes even more crit. Also with all the multitarget encounters in SoO, you will have UA ticking constantly and will probably have 90+% 2 piece uptime
"How easily the mind can be turned to hate from a place of fear - an instinctive, natural, protective response. Instead of focusing on the things that unite us, we focus on what divides us." - Thrall
In skada the total damage from the trinket is listed together as a separate portion of damage, so you can see how much it did. It doesn't give you any extra ticks on dots, just deals flat damage.
Anyone have any numbers for how much more KTT gains from a gosac spec vs a gosup spec for affliction? That said I don't recall any spots where pets are hard screwed by encounter mechanics (jikun/jinrok pools/etc). KTT shows up on my skada as its own separate entry and damage contribution.