I have a Canadian built dump wagon, with boogies and dual cylinder hoist. It's stout, and should probably have breaks when loaded.
If a good chunk of wood goes under the landing gear I can get the hitch to hook by lifting the front of the tractor with the bucket and sneek the hitch in to make up for it sinking in the ground. Once the pin is in and I put the front of the tractor down the jack (landing gear) has almost no weight on it.
The ideal would be to not have to get on and off but in reality it's the jack, landing gear cranking that is the part that makes loading unhooked miserable.
Any system that uses the axle to balance for tipping, runs the risk of tipping while loading and always leaves the tractor underweight for breaking and traction.
I'm keeping an eye out for a fith wheel camper with power landing gear that is headed to recycling.