I actually love the idea aesthetically and from a green POV.
I just think, especially with the idea of leaving the longer length, so little of the total weight is behind the axle, if only one is left there. Lots of vehicles are pretty limited ball weight was the point of my "negativity".
With a strong enough tug I guess no worries, or for those not also wanting a lot of load capacity.
It oes sure make a sexy little tiny-house / steel tent.