>>7461460>>7461707According to Lazyaza (who designs colorways for MMC) it has to do with production costs. A deluxe costs almost as much to develop as a voyager or larger, but customers expect to pay significantly less.
I imagine the same concept translates up another notch to MP. With minimal effort (depending on the design) you can just upscale a mold, give it articulated fingers, cover it with paint, and suddenly people are willing to pay 40% more for it.