If you are happy with having a dual extruder, then I am glad for you. It is only extra money to get it. Granted I will wait on going multi extruder. My thought is that a person should only need one hot end with 3 different extruder motors pushing filament in. Much the way a multi color paper type works. The software calls for a specific color and then it it s matter of x amount of red, x amount of blue, and x amount of yellow to create the color. The problem I understand is the weight factor. Too much mass in the nema 17 motors.

So some day there will be a breakthrough on the colors and it will retrofit all current printers.