The reason for running Cold Snap is that after drawing enemies in with your Shadow Grasp, you use F3T2 Cold Snap so that your enemies can be slowed by the chill on crit from that ability, forcing them to stay in your Multiple Blaze for even longer, making Multiple Blaze that much more effective. With a single target burn build, it’s really nice to have that extra AoE clear when it’s up, so Cold Snap helps you to do a tad more AoE damage along with increasing Multiple Blaze’s potential.
I am in favor of cold snap! the key is to use frost soul. This will allow you to use cold snap 3 times and inflict chill per hit x3. It is a good crow control skill. Sadly i dont have blaze yet but I spec my 4 skill to tier3 stage 2 to get used to it and it works just fine. I cast meteor shower and dual dragon while they are fronzen in place. There is no real benefit of using fire soul in my opinion. And why do you prioritize your F in fire stance over your 2 HM skill? just 1 point is enough since the other 2 stage are useless. I would use 1 SP on F fire stance, and will have my dragon blaze HM skill instead.
Also i would not use my tab fire stance to daze, i would take 2 point from there and spent one on cold snap all the way to stage 3, like i said before with frost soul you can spam it 3 times and since recover focus per hit you have focus for days!. The last point will for my inferno or wildfire.
That daze is very useful in PvE. I think not enough Force Masters use it in general, because it is a good AoE joint CC to any boss as well as groups of mobs. This greatly helps survivability of the party when attacking large groups of mobs. Also, I use this with multiple blaze. Since the Shadow Grasp for this tree only pulls once, I go something like this: Cold Snap (for chill on crit) -> Fire Tab -> Shadow Grasp (4) -> Activate Fire Tab for daze -> Multiple Blaze (4). This will ensure at least 4 if not all 5 multiple blaze attacks hit your target (assuming none of them jump or use gap closers to get to you). It’s a very strong combination.
Also, since Fire Fury is used a lot in this build to hit with dual dragons and attack with dragonblaze to keep up the fire damage, you need 3 points here to make sure you’re not losing damage while using it. Currently with 3 points into Fire Fury, it still feels as if I’m losing damage from my current rotation because Fire Fury then Dragonblaze (using F -> F) takes so long to cast in comparison to my LMB RMB 2 rotation. The extra 2 points here ensure you don’t lose too much damage since the third point adds bonus damage on burn.
Windstorm causes you to lose dps. 3 seconds of crit doesn’t matter when using this causes you to do 4k avg dps instead of the normal avg 18k dps from your normal rotation. You only really NEED 1 point in frost armor because the heal there is really nice in a pinch. I used to have 2 or 3 depending on the situation. That’s one of the points i sacrificed to spec into multiple blaze. With burn build, especially with all of the auto detonate FMs out there, stacking that extra ember helps to make sure you are keeping up burn on your target. Some bosses like to clear their ember stacks and so 3 points in beam help achieve that. I’m not sure what i changed in the build, but I was able to actually keep my third point in inferno, so that’s really nice.
As for Fire Fury: It is used a lot in this build to hit with dual dragons and attack with dragonblaze to keep up the fire damage. You need 3 points here to make sure you’re not losing damage while using it. Currently with 3 points into Fire Fury, it still feels as if I’m losing damage from my current rotation because Fire Fury then Dragonblaze (using F -> F) takes so long to cast in comparison to my LMB RMB 2 rotation. The extra 2 points here ensure you don’t lose too much damage since the third point adds bonus damage on burn.
What 4k dps? Specced windstorm does (I think) around 8k per hit (over 10k with blue buff), so 16k per use (every use adds 6% crit and because I have 60% anyway, except the first 1 or 2 uses, everything will crit making the synergy from amethyst really good and the Overall damage very high). In combination with the previous used Meteor it is definitely worth it cause meteor will always crit, too.
It seems you are focusing very much on aoe. I know multiple blaze is good but I would not make a build because of trash mobs. The important fights are the bosses and there cold snap is useless and also frost nova is useless.