JERRY - 4WD wouldn't do me ANY good on some of my loader work. Lots of times when I load dirt I have the frt wheels off the ground. Also when I push snow with the blade on the loader I ALWAYS carry the frt wheels & steer with the brakes.
But thinking back at the decades of running Letter series FARMALL's with loaders I do remember having to dump a bucket or two of "stuff" when trying to back up out of the back barn with the '51 M & Stan-Hoist loader that's out in the shop. I made a week-long project out of cleaning that barn the summer of '72. First thing was I had a teeny-tiny spreader, second thing was I was spreading about 3/4 mile away from the barn, third thing was the "stuff" was about three feet deep, barn had a dirt floor and handn't been cleaned for many many years, maybe ten?
FWA would have been great in that instance. Dad almost turned that M into a dedicated loader by "reversing" the tractor under the loader, installing at the time, still available IH reverse operating controls on the tractor and mounting that loader with the bucket arms extending over the "rear axles" of the tractor so the weight in the bucket increased traction. There's been many similar tractors shown in FARMSHOW magazine.
And the one thing I like about the loader KRAIG posted the pic of, is the self-leveling bucket. Bucket always stays at the same angle to the ground no matter how high you raise the loader arms.