Well, seeing that HAT is apparently pretty freaking awesome I decided to investigate it a bit, I'll post my thoughts here and than once I get soem feedback I'll probably actually test it in game.
My understanding of HAT is that you get so many combo points all you can do is spam finishers.
First thoughts:
1. Cycle?
2. Eviscerate or Envenom
It seems to me you would do a similar cycle with HAT as you would with Combat just replacing SS with Evis/Envenom
SnD->Rupture->Evis/Envenom x n times->SnD->Rupture->Evis/Envenom x n times->Repeat
As for Eviscerate versus Envenom my main concern is poison stacks. If you go the envenom route and I would assume DP/WP would you have enough stacks of WP on the target for the amount of Envenom you spam. Or would the number of envenoms result in not having enough stacks on the target to do decent DPS.
I hope that made sense...
My next thought is in regards to the build itself, if you aren't going to be using SS/Hemo is there a point to having points in talents to buff them? I'm thinking that for a pure raid perspective it wouldn't be worth it and you would be better off putting those points elsewhere.
Which brings us to my thoughts for a build.
http://www.wowhead.com/?talent=fhe00xZ0gVZe0fbhhdbVuVc
That build would be one using Evis and not having anything to do with Hemo or SS just straight up Finishers. Some of the Subtlety points could probably be shifted around based on personal preference since they don't offer much if anything in terms of DPS. Not sure if Imp SnD or Blood Spatter would be a better choice, now that I think about it Blood Spatter probably would be since SnD shouldn't fall at all with the number of Combo Points were building not to mention the SnD Glyph.
The above build could also take the 2 Imp SnD points and move them to Imp SS if needed. That would probably make the build much more solo friendly but less raid DPS.
For an Envenom build I would probably use the same as above except replace Imp Evis with Vile Poisons.
For a build that included Hemo I would probably take a point out of Heightened Sense and put it in Hemo. I wouldn't take Slaughter from the Shadows because the points you would take from other talents would probably result in a DPS loss.
Now this is all based on speculation from my part, and I would love for someone who has actually played HAT to give me their thoughts. Everyone else is welcome to comment as well.
Edited, Dec 6th 2008 1:21pm by GodOfMoo