Interesting stuff, I'm just thinking of ways to assemble everything. What may be the simplest way to test multiple configurations would be to find a rigid piece of tack board cut to the desired size and just attach the printing to it, from there you'd just push components into it (with a bit of their conductive glue or some such); holes would need to be punched for components with weaker leads, but over all this might allow for quicker design process, removing the need for running loose wiring and then converting it to PCB design.