Sudomod did a GREAT PiBoy build and I want to do one as well. In fact, they seem to have even made a drop-in PCB that you simply solder a pi zero to and you're good to go. I'm copying a few of his ideas while also trying to keep a simple much of this build with easily sourced parts. I'd like to avoid depopulating the Pi and hopefully make it maximumly reproducible while limiting most of the hard modding to the DMG case