You could also make it's cargo bay door open like your C-130. (By the way, nice 3D models!)
Or, you could make one with its rotor down and up with the cargo bays always open in an addition. That way you could make vehicles and stuff dive out. And it would look like people are loading it up. Just a thought, you don't have to make so many versions of the model, do what you want. Just a thought.