It's not Harpoon versus Disengage.
It's Harpoon
with Disengage. It was that dynamic that made Survivals mobility interesting. This also affects
Thar She Blows and
Bait and Switch.
IE, enemy raid boss casts stomp. Melee
hunter disengages out, harpoons back in to avoid damage.
I didn't support the Cheetah change but it is pale in comparison to the sin of removing Disengage from Survival, from my perspective.
Both at the same time hits Survival much harder than the other specs.
I have a feeling we'll see further iterations regarding these though.