Will the camera close with a small lens, like the one shown in the blog, attached? That would be a useful feature.

A white camera with a red bellows is going to start looking dirty with regular use, I think. If you want to offer a camera in patriotic colors, how about red with a white bellows?

Also, be sure not to neglect the basics. It may seem obvious, but the first generation Chamonix 4x5" had a problem with groundglass registration. It was otherwise a very attractive camera, lightweight, with extensive movements and many attractive features, and affordable, but if the groundglass is out of register, it's a paperweight.