Please clarify this. Are you effectively lowering the receiver tube 2" by placing it under the cross bar?
The last "travel trailer" I towed needed a 10" raised hitch. Most new trailers are jacked up to match the new pickup trucks.
Your "new" design is just easy for the welder.
The higher the receiver tube is the less it is noticed when not towing.
Every inch higher the ball is in relation to the cross bar adds more twist to the crossbar every start/stop.
By placing the receiver tube under the crossbar you are increasing the torque on the crossbar.
