We're in the process of adding STL export and uploading to Shapeways for Li as well as general usability improvements. Minecraft import/export will likely have to wait, though. Have you tried the software out yet (it's in a free open-beta at the moment)?

As far as offering the scanner as a stand-alone product, we're doing some tests on whether it'd be feasible or not. If things look promising, it'd retail for much less than the Makerbot Digitizer.