Bringing Prosumers into the Physical World

An interesting new side to the the Prosumer trend is the development of professional services that allow individuals to design and purchase and/or sell physical goods via the web. In other words, take physical outsourcing and make it available at the individual consumer level. It's pretty straightforward, you design something, put digital working drawings into their templates, upload to the site, they laser cut everything according to your lists and ship you the goods. You can refine and tweak (obviously the more rounds you do of this, the more you pay in cutting and materials) and then keep for yourself or place into their marketplace.

The short view of this is the initial reaction I had "hmmm, maybe I'll finally make that table I sketched out" (although not the one w/ steel legs, since they don't yet work in metals.) Then, after thinking for a minute I started thinking about: what if IKEA or Target contracted with these folks or someone like them? Upload a few templates from their designers, allow users to customize, and make selected custom designs available on their website. If something you customized sold, you'd get either some more store credit or perhaps even some cash. Maybe there's a sales level below which you get credit, above which you become a "registered" designer and can start collecting checks.

What's the risk to them? I don't see much of one except perhaps "taste pollution/dillution" due to poor or "off brand" designs. They can always refuse to "publish" designs that don't meet their standards -- while still allowing the creator to purchase said designs for themselves. Additionally, by giving their consumers the ability to become involved in the production & design process, thereby becoming prosumers, they are allowing for brand engagement and growth. It seems a bit like a win/win to me. I get to not only make my own table, but if it's cool enough, I'll make some cash and be able to tell people that I have a product at IKEA/Target/whereever.

Are there downsides I'm missing?