It is something I have spent loads of time trying/playing around with and experimenting with, believe me. I still come back to the same gear and build I have now.
It looks great "on paper" but the reality comes down to this. I tried to be neutral with the gear swap, i.e. use the same gear in your chardev and not my ranged weapon (which you can`t get no more). I did a direct swap and I saw these differences. (It is still neutral even though chardev does not show scope damage increase nor the crit bonus from Skinning it would seem).
Your chardev gained 6.1 white dps (shown) and the weapon hit for about 6-7 more, albeit slightly faster. The ingame focus regen gained from your little bit it of extra haste is unnoticeable, in the region of about 0.2 energy per second. Therefore it would take around two minutes to see the extra regen in the form of an extra arcane shot (again albeit GCD limited). As Survival, cast time reduction is only really effective on Steady Shot for PvP and your chardev nets around a 0.07 second reduction in cast time. It would be a dps increase, albeit limited due to:
My gear on your chardev (keeping professions and 2nd trinket the same) nets an extra 2.44% crit (shown) and a net gain of 190 health. So your theroretical dps gain from white attacks and the occasional very slightly shorter Steady Shot is largely mitigated. Then we have almost 200 more extra health. It is most likely helped by not being over hitcap although that is arguably fine versus Nelfs for example. Again the focus regen is unnoticeble especially in PvP.
So fractionally better burst (through extra crit) and more survivability (190 health), versus a slight improvement in steady dps (haste from white attacks and shorter cast time, which in that spec only improves Steady Shot as casted).
As burst and survivability is king in PvP, guess which I went for?
P.S. It is always fun to try new ideas and specs and a haste set may prove useful in a particular set of circumstances, but imo it is still inferior in PvP in the long run.
