Yeah, that point is really a struggle. I just wanted to point out, that Unleash and AD are quite similar and I dont really see the reason to have both.
I could also remove Unleash and put AD on it's position and nothing really would change for me. I prefer Unleash, others may prefer AD or use both.
My aoe rotation goes 1 Unleash-Salted Earth-Blood Price-TBN-Dark Passenger. Then I go for SE combo (when there is one bigger target in the pull that will live the longest) and weave in as much Dark Arts Quietus as possible (which is actually a lot)
There may be better rotations with AD in it, but I feel really comfi with this one.
Edit: Maybe i was a bit too hard to poor AD. I'm sorry xD
However, I think that change to AD or Unleash, to make them more different to each other, would still be nice, instead of having AD as a kind of "improved Unleash"