With a week of experiencing Patch 5.3, I've discovered several things:
Blink Strikes is handy because it's quick and automatic.... and also inconvenient because it's quick and automatic. Accidentally sending your pet in to attack the wrong thing now requires a better reaction time than usual :P
Also in the talents, missing the extra interrupt from Intimidation. Once again Blizzard is taking away things that make BM fun and unique for me: NOT HAPPY, Jan.
Once the quest chain is complete, the Barrens doesn't hold any interest whatsoever. For someone who hates farming, a quest which requires you to collect 4x150 items is quite off-putting, even if there are rewards.
Heroic scenarios are easy, fun and fast. Pretty much the same reaction I had to normal scenarios when they were new; thumbs up to Blizzard for whoever came up with the concept!
I still have not had time to fill my stables. WTB RL holidays!