Finally decided to pull the trigger and get me an Analog Discovery 2. This makes so much sense for the stream (overlay the data), and for pinball repair (portable scope/meter/analyzer).
Analog Discovery 2 - USB Oscilloscope and Logic Analyzer https://digilent.com/shop/analog-discovery-2-100ms-s-usb-oscilloscope-logic-analyzer-and-variable-power-supply/
@baldengineer AWESOME! I did grab that as I didn’t want to try and fab one myself. I do plan to make something for the I/O’s but not any time soon.