I'm just curious if they will be flyable, or just moving eye candy, in the final product?

well, its time dependent.

its not impossible.

helecotors kind of move like harriers without moveable nossles.. actually I think i might do a helecotorised test version.

Im really very unsure on how rotor torque behaviour works..

..in the flight sim show near birmingham uk the other day I had ago of the helecotor sim - and got accused of treating it like an arcade :-)

that is to say - the behaviour is more complex than what I realised. but I think I basically grasp why it does the weird things it does.