Thanks Ketari, I actually read that post (remember ArP being called "mathy") but I seem to have missed the mastery as a stat reference. You're very right about that being confusing and obviously, we all want to know more.
Another one for speculation is, with the change to a focus system, making us resource-limited, I'm wondering if this will finally deliver us the 1 sec GCD that we've lusted and longed for. Though, with the likelihood of Steady Shot becoming instant (with the haste changes, it's unlikely that hunters will have many if any cast times), may mean that it doesn't really matter so much anymore. Lots of questions that will hopefully be answered soon.
When in danger, when in doubt:
run in circles, scream and shout.
I think it is safe to assume abilities with cooldowns will have reduced (or zero) focus cost. Assuming the abilities we have today remain on the same GCD, effectively choosing something like Concussive Shot means you don't do damage with that GCD and probably is neutral in terms of focus regen. One GCD today would be 9 focus regen, so perhaps accessory abilities would cost some other value, perhaps 3-9. It is reasonable that choosing to use Concussive Shot has some tradeoff. The use of the GCD may be enough tradeoff, or a token energy cost may be.
I also imagine the desire is for us to not be GCD locked. I suspect that means harder hitting active shots that we fire less often. Our focus reservoir is for initial burst but steady state means pacing and alternating shots. Now today, we choose, say, aimed because of a cooldown, but in a cooldown-less world with focus, we may never choose it unless it is a high damage ability or for its debuff. This will simplify rotations and make our shot selection much more situational.
From the sound of the intent, basically focus is to keep us from spamming our best shots and make our resource management more tactical rather than strategic. I don't think it is to take away our other abilities short of eliminating redundancy of having multiple damage dealing shots that we interleave based on cooldowns.
That's a lot of "I suspect" and "it sounds like" though. We have very limited information at this point. I think the key takeaway right now is: no mana, instead tactical resource management. In reality, this means we will be getting a tremendous amount of attention (more than other classes? who knows, but I suspect there is a reason we had our own highlight in the panel since there clearly isn't time for all of the other classes). Hopefully this means we emerge on the other end of Northrend with a more interesting, modern class that provides new challenges and different tradeoffs.
I can't imagine Shadowmourne really is a dk/hunter weapon. There isn't really such a thing as a dk weapon (they share itemization with dps warriors and ret paladins). I think the hunter bit is a joke, as on the slide there was a snarky comment at the bottom saying "hunter weapon." I expect the Wryxian quote is a misunderstanding or confusion or just silly joke.
Of course, hey, if they want to give us a legendary, awesome, but I am skeptical if for no other reason than it would just be stats for us but the innate dps of a weapon is a huge deal for melee classes, whereas for any melee class, it would be a much larger dps source.
I can understand you're exciting by the upcoming expansion, however there isn't enough information released about it yet to warrant class-specific discussion threads. Please keep your discussion to the BlizzCon thread in General Discussion.
Edit: These types of threads will be fine once testing of the expansion with publicly available information has started.