and less unwanted surprises 
(specially using Dynamics) I think that this "Bone Tab" option to can switch between the two possible animation calculate ways (Zero Frame Points Position first --> Bones Influence then* / Actual Frame Points Position first --> Then Bones Influence), believe me, It'd be a simple and funtastic way to addapt Moho to all animation ways with perfect results! 
PLEASE! Consider it... (please) * The only way Moho works actualy in Bone Layers.