I have my DP stacks fall off even when I'm not reforging for Combat, so yeah, it's just a problem. Course in general DP isn't a huge factor in Combats DPS - But it still hurts.

It seemed that on fights with Blade Flurry(the only time i'm ever Combat), it doesn't do as much damage as the standard setup.

That doesn't seem logical given that Blade Flurry works for both Sinister Strikes and Eviscerates and, so far as Combat spec is concerned, the talents in question only relate to those two abilities i.e. if 2/3 Lethality and 3/3 Coup is optimal for a ruptureless cycle (looks like it is for my setup too) single target then there is no reason why it wouldn't be when Blade Flurrying. Good tip bi0 - i'm always ruptureless as Combat in my 10 man because there is no bleed debuff.

From my experience, on a fight like Domo(atleast non-heroic), the adds usually take most of the BF damage from Sinister Strikes and Auto Attacks than Eviscerates due to them dying fairly quickly.

Only when the adds become higher priority than the boss, which is never really going to happen. The adds still need to die, but it's more important that you kill the adds while maxing your dps on the boss than that each cat die 1-2 seconds earlier because you changed your rotation a bit. The entire fight is about killing the boss as quickly as you can while performing the mechanics correctly (phase changes, seed timing, defensive cooldown rotation, etc) so it's not going to be ideal to take a serious dump in energy efficiency by using a 3 point evis. Any time you use it a 4 point evis it means you could have used revealing strike and that means your evis is going to hit ~45% harder if you use one more combo point builder.

I was wondering with the change to Unheeded Warning today (now gives 1926 ap instead of weapon damage) how does that change its overall ranking among other trinkets?

Well, it has 321 agility and a 1926 to stat proc; this is the same as Essence of the Cyclone and Prestor's. AP, by definition, has an EP value of 1, which is less than haste and (depending on your exact gear and spec) similar to crit, so logic dictates it is now worse than normal-mode Prestors and comparable to normal-mode Essence of the Cyclone.

switch off the hand by a slower weapon at the time of Killing spree will gain a dps? as would be the best macro for switch weapon and REswith?

From what I know off and people have told me is that its a DPS loss overall since you use a GCD when you switch weapon in combat so that would've been like switch weapon > gcd > killing spree > equip dagger > gcd > keep on going as usual. I had the same thought when I started to raid again on my Rogue but got told that its a big no no to that. Might have changed now but I doubt it

It is because your gearset is set up in a way that makes DMC:Hurricane better than the other trinkets.

The list is to be used as a general guideline, but for more accurate results it is pretty much always better to use Shadowcraft or own careful calculations instead.

Of course, if you don't delay your 2nd Tricks will pick up the stats from Matrix Restabilizer - as it lasts for 30 seconds, it will affect exact 1 Tricks pretty much no matter what you do. So while there are some trinket procs and such that might be worth waiting for, there are also some that aren't.