Assassination aoe is garbage, and the way to get it is also garbage. Indiscriminate carnage should not be so far down.
1: Carnage should be farther up the tree, and have a 20/30 sec cd.
2:When crimson tempest is up, envenom should cleave a portion of the damage to other nearby targets.
This way you still retain the dotting idea of assassination, but at the same time you have pretty good aoe that is not relegated to a last row talent, and the gameplay of it is not identical to other specs.
And also, it makes poison bomb good in aoe.
On another note. You need to do something about deathmark. It’s unacceptable that it has no aoe interactions at all.
You even reworked it, you changed vendetta into deathmark, and didn’t fix the same problem. Wtf are you doing?