I think a fitting large, non-weaponized module would be the V-22. (You know, the big fat tilt rotor thing?)
Pros: Capable of flying very fast while still getting cargo in and out of very small areas. It would be a special challenge to fly and master. The thing is built like an A-10 so you dont have to worry about taking a few hits. Also, as far as I know, nobody has made any high fidelity simulation of it. Which leads to my next point...
Cons: it might be classified as all hell, which may be the reason we haven't seen any high fidelity simulations of it.