I do hope they incorporate a decent luggage compartment in their design and also get rid of the 3 foot long rotor mast with something more pleasing to the eye!!
Not being an engineer or a mechanic so I don't know if it's possible or not, but with regards to a diesel engine, would that be modified to run JetA else we'd be very limited to which airfield we could land to get fueled up. Just think of the savings on the fuel bill