nice! You could brute force it a bit? May take a little bit of work. But you could take the part descriptions from ldraw (from ldraw.org). Have a decent way

nice! You could brute force it a bit? May take a little bit of work. But you could take the part descriptions from ldraw (from ldraw.org). Have a decent way to render a piece (and random known colors). Then feed in those pictures/pieces as random orientations to your net? That may let you automate it very nicely? You would basically cut out a huge time sink of the hardware bit and get a net that is 'close'? Then once it is close you can add in the hardware bit? If you wanted to simulate random pile of bricks you could use something like one of the physics simulation engines and add in random bricks and let them flop where they can? That could give you some input values for your net fairly quickly?