Id be okay with FS being our generator as long as it also gives a bit of focus to the pet too. Im less inclined to have Kill Command at all to be honest. I dont want to borrow from BM at all. I agree with much of the naysayers on that point. It is all together ridiculous that SV has to borrow a spec defining ability from BM and masquerade as if it fits into SV.
Flanking Strike Generator > Raptor Strike Spender > Lacerate Big Spender and Synergy builder.
I do like the idea of adding something like
Devilsaur Bite
Survival Hunter Ability
50 focus. Requires Melee Weapon
Instant Cast. 20 second cooldown
Leap into the air and perform a massive driving attack at your target causing 1000% AP damage.
This ability always crits if you are behind your target. Critical strikes with Raptor Strike and Mongoose Bite reduce the cooldown by 1 second.