Earlier quoted context omitted.
I'd be happy to make it for free just for the feedback! My contact info is in my HN bio. The downside to a motorized display is the cost. Each motor is roughly $1.50 USD. When you include all the other stuff (electronics, 3D printed parts, etc.), it's at about $2/pin. A relatively small 10x20 display (minimum size for a Tetris board, for example) would cost $400 USD just in raw cost. At retail, that 10x20 board would…
Would it be possible to use fewer motors to control more pins? 'Stuff Made Here' made a 12-point display using two motors. https://youtu.be/8Au47gnXs0w?t=429
Maybe. It's all a trade-off. At the moment, I'm running to get one version up and running and willing to revisit design decisions when contemplating a version 2. (If I don't do it that way, I'll keep getting sidetracked by cool suggestions like yours and never get V1 done! :)