Focus fire THIS PATCH was a dps gain to consume for yourself by about ~3k in simc. Its value next patch has gone up a large amount for a number of reasons. For starter, they upped the value you get from using it, and decreased the value your pet gets if you don't. They've also nerfed pet basic attack damage by twenty percent seemingly. As for TotH, the final nail in its coffin was placed this patch with the massive arcane shot nerf. It was already weak due to the previous nerf to arcane shot, and this one sealed the deal. If you're interested in my CURRENT rotation for simc, bearing in mind that its more than likely going to change in at the very least some way next patch:

As you can see, the value of fervor this patch is so insane that it actually takes priority over kill command.

The way its simulated is exactly how it functions, aside from frenzy still being considered a pet only buff as apposed to a buff for both pet and hunter, at least in simc. I was responding to the first half of your statement because simc and femaledwarf are coming up with very similar numbers currently. Fervor functions as 50 initial focus and then 5/sec over 10 seconds. I've accounted for that and can't find any fault with how simcraft is portraying this. The reason its currently a gain in the sim is because you gain more focus over the entire fight from placing it at the top than you lose from the initial cast and any casts above 50 focus from there on out. Increasing the interval on the cast of fervor in any way, shape, or form results in a loss. I haven't found the command line yet but I'm sure there's some way to make it only cast if the fight duration is passed a certain point, lets say 5 seconds, so the focus has been dumped. I'm hoping that could at least reduce the impact of the first cast being so severe at 50 focus loss.
Update: I've been able to achieve the same DPS as having nothing modifying fervor usage through an opening sequence that casts KC -> SS -> fervor -> bestial wrath, it also reduced overflow of fervor focus to just 19.8.

Currently on beta, DB does not take advantage of BM mastery. That may be changed in the new build (as they indicated), but since it's not in the notes I won't be adding that into my sim until I can verify it on the server. Fervor also is quite beneficial to BM because it gives the pet focus too, which means more wild hunt attacks (without it, the pet rarely gets into wild hunt territory after the start of the fight). Fervor's boost to pet wild hunt attacks for the other specs also helps keep it ahead of thrill.

Thrill's problem is that everytime they bump the proc rate, they nerf the shot. Since all thrill really does is save you focus for more arcane shots, it gets weaker everytime they do that. It's possible it performs better in practice than in my sims, but right now it just looks incredibly weak for all 3 specs.

With regards to FF, I currently have it simming cast at 5 stacks and I'm using the model on the MMO notes which has the hunter haste bumped to 6% but no changes to the pet attack speed from the previous patch. That change helped make the difference between using it and not using it more attractive (it now comes out at about 1k dps gain to use it) but it's still fairly weak.

My preliminary update of simc shows more significant drops, but there are a few outstanding buffs that they described that need to be verified and added to the model (e.g., wild_quiver triggering on level 90 talents, BM buff applying to some abilities, etc.). The current reference profiles (with fervor):

Spec	Before	After	delta
BM	131,858	101,672	23%
SV	118,901	99,329	16%
MM	116,280	92,861	20%

Gahddo's improved profiles:

Spec	Before	After	delta
BM	143,098	107,144	25%
SV	124,685	104,664	16%
MM	122,200	94,515	23%

Many other classes were nerfed as well, so I'm not worried about hunter vs. other classes. MM dropped more than seems appropriate to be in line with the other specs, so the highest sim priority is to find and implement and mechanics changes that are not yet incorporated. Secondarily, it's useful to note that improved profiles and gear above make a difference!

Since there were inquiries about the impact of the racials, I thought it might be useful to see how much impact they're making in the various specs. Here's the results I got in my T14H sims by spec. Note that for draenei, trolls and dwarves I replaced the hit/expertise with the corresponding crit rating so that I could use the same gear for comparison. This also assumes 300 agil food for Pandaren.

Spec	Race	DPS	Spec Racial Difference
BM	Orc	103318.58	0
BM	Pandaren	101135.26	2183.32
BM	Troll	100980.92	2337.66
BM	Worgen	100645.74	2672.84
BM	Undead	100491.53	2827.05
BM	Goblin	100406.27	2912.31
BM	Draenei	100238.97	3079.61
BM	Dwarf	100235.68	3082.9
BM	Blood Elf	99789.6	3528.98
BM	Human	99770.12	3548.46
BM	Tauren	99753.49	3565.09
BM	Night Elf	99735.07	3583.51
SV	Orc	95450.29	0
SV	Pandaren	94946.92	503.37
SV	Troll	94830.95	619.34
SV	Undead	94587.69	862.6
SV	Worgen	94459.94	990.35
SV	Draenei	94119.74	1330.55
SV	Dwarf	94116.32	1333.97
SV	Blood Elf	93818.51	1631.78
SV	Night Elf	93732.24	1718.05
SV	Human	93713.46	1736.83
SV	Tauren	93697.87	1752.42
SV	Goblin	93633.68	1816.61
MM	Orc	91672.69	0
MM	Troll	91367.16	305.53
MM	Pandaren	91138.73	533.96
MM	Undead	90929.29	743.4
MM	Worgen	90924.9	747.79
MM	Goblin	90605.94	1066.75
MM	Draenei	90596.21	1076.48
MM	Dwarf	90592.81	1079.88
MM	Blood Elf	90215.56	1457.13
MM	Night Elf	90210.42	1462.27
MM	Human	90195.11	1477.58
MM	Tauren	90183.18	1489.51

You don't seem to count new Undead dps racial Touch of the Grave - Spell - World of Warcraft, they couldn't be that low, near taurens and NE.

After the changes have been implemented, I'm seeing fervor being a 0.3% dps increase over DB for BM in T14Hc gear, with mastery>crit>>haste, which is what I deduced through experimentation yesterday, with a total drop of 12% in BM damage from yesterday to todays iterations and some wasted secondary points in expertise and hit (will have to spend more time to balance them more precisely)

One additional note for Lynx Rush, from the logs, it does not interrupt normal attacks against the primary target. It just adds SPELL_DAMAGE ticks that can be dodged, parried, etc. It's not yet implemented in simc, but it looks straightforward now.

It's a good thing you replied Lokrick since I had the same reaction. I'll look into the mechanics of this and add it to my site as soon as possible, thanks for bringing it up o5a!

Are there any other racial changes this expansion I might have forgotten? I know about the troll/dwarf change to expertise and have that implemented, and I've updated the numbers for blood fury.

I updated my racial table above with the new undead numbers for each spec, based on the mechanics info Lokrick was kind enough to look up for me.

Probably caused by shot shifting related to the haste moving to a less favorable shot count (especially given it didn't dip for the other 2 specs). I wouldn't put a lot of stock in that particular value.