Honestly, all of these new talents of ours are just bloating our rotations and keybinds. I'm shocked that they expect our class to weave in an extra 15 second cooldown talent and a 30 secnod cooldown talent into our normal rotations. Especially when our signature abilities have such short cooldowns and have to be managed correctly. I just see no other class in the game that has so many talents in their trees that they are forced to use in their rotations, with such short cooldowns on them.
Even Murder of Crows screws our rotations. The 60 second focus cost is horrible. No one can dispute that. It forces us to blow Rapid Fire just to regain the focus back and start our actual rotations. Serpent Sting, Black Arrow, Explosive Shot and Glaive Toss already cost 100 focus for us, and that's just the beginning of Survival's rotation. Murder of Crows should cost 0 focus to use, plain and simple.
The biggest issue with these talents are that they're BALANCING our damage around them. Crows + Dire Beast + Glaive Toss equates to a large chunk of our total damage in PvE. I would rather that damage be re-allocated to our actual rotational abilities. I'd like Aimed Shot and Chimera Shot to hit hard. Steady Shot could have its damage tripled and it would still only tickle players in PvP. Explosive Shot is very weak when compared to what it did in Dragon Soul, and its useless in PvP against resilience.
I feel bad for the seven people that are going to play Marksmanship in 5.1 and have to spend 60 focus on Murder of Crows during their Careful Aim phase.
TL;DR - These talents suck. They bloat our rotations and make the specs un-fun to play. They take away damage that we'd otherwise have in our normal abilities, thus really making it difficult for them to give us decent PvP burst.