CyberJack, I too now wonder about the long-term future of Greenfield designs.
COX have already announced a new low end "hydro Fastcut" (a regular Greenfield tractor but with a hydrostatic transmission). It must be to address their need to produce cheaper, more disposable products to compete with the imported brands. Ironically, the hydrostatic transmissions are probably imported.
I have to applaud Greenfield for sticking to their design and its quality right to the end. I guess the difference with COX is that they are adapting, and that allows them to survive, but at the same time will inevitably reduce quality.