I'd add weight.
Not by making a dozer bigger,
just making them heavier.
The way I'd do this its by removing anything plastic.
Sure they look nice with all of the hoses and wires neatly tucked away behind an aesthetically pleasing plastic panel...
Kind of like in a car or motor home or a Freightliner that is driven every day off road.
Everything plastic starts falling apart.
But since everybody knows that will never happen,
How about an option of a seat that can be positioned or moved off to the side in larger dozers.
Rip Cats for example.
Instead of having to turn your body in the seat to see your work area which is BEHIND you,
how about a seat that swings around just enough to make ripping easier on your neck?