Doubtless
there is a need for SD40-2s in many flavours, far beyond the occasional runs of a few Western roads.
Regionals, leasers, and the rest are prime territory for new and improved models. Time marches on and everyday new schemes come on line that someone out there wants.
Age will eventally catch up with them all and they will fall from the scene. But many modelers still need fleets of quality Nscale SD40-2s from the IPD boxcar era onwards without resorting to strip, detail and paint methods...