Customization may sound good, but really the only way that would work out would be to simply offer a specific list of choices from which to choose. Such as regular or articulating screen, video or no video, DX or FX, sensor size from a specific list, etc. There would be limitations on how different combinations could be put together because of what will fit into a given body. It would present a lot of problems in terms of manufacture, compatibility of elements, etc. Actually, to some extent, with all the choices available, you can pretty much find cameras that fit every need. For instance, I have video capability on my cameras, which I do not use. But it does not get in the way, I simply ignore it. Standardizing a camera model actually reduces its cost of production. So in my opinion, custom built would be far more expensive, so most of us would probably not be able to afford them. If you have unlimited funds, however, I suggest going to a camera company and request a custom build - if it is worth their while, I suspect they would build it for you. People have custom cars, custom kitchen cabinets, etc. It simply necessitates finding the appropriate craftsman to do it and paying the price!