Yes please on size, fit, material and color. No thank you on everything else.
With Shapeways I had a lot of interest into customization. It would make the perfect use case for 3D printing. I have been following the developments in the industry for some time now. But up until today, I can only conclude that people are not so interested in customization.
I think it is because people do not want to think about design as much as we like to think. They rather leave it up to the designer to design what they want.
Now this does not mean all customization. I primarily talking about customization with regard to the design of an item. There are plenty of opinions on color, size or fit. Just take a look at anybody’s iPhone and you see plenty of different background images and different arrangements of the apps on the screen. Also, people like to choose the color of their iPhone.
It is like buying a couch. I have an opinion on the size of the couch — two-seat, love-seat or three-seat — and the color. I have a preference for the material. But I never have had the desire to change the design. I just choose the one I like.
Same goes for clothes. I love to be able to select on size — it should fit right? — or the color. But I would not want to design it myself. I would like an idiot. I am not a clothes designer and never aspired to become one.
In the end it is about offering customization options which are relevant to people. This could be far reaching — from fit, color, size to material — but it almost never touches the design itself. The design is the domain of the designer. Everybody is fine to keep it that way.