I just want to chime in and say I absolutely love the README. It's awesome when open source projects are so detailed that I end up learning so much just from their descriptions.
That's really impressive! A couple of ideas for future developments:
1) stream an emulated GBA game to it, video that, then stream that video to the GBA, and so on, and see how many layers deep you can go before you reach the bottom of the dream
2) maybe with some electronic wizardry it would be possible for the Pi to act as a proxy for a modern console like a PS5?
Amazing work and absolutely love the write-up and documentation. It helps people like myself learn and grow (especially in regards to reverse engineering) and it's so much better than a readme that says something to the effect of "here's the code - have fun" and the code doesn't have comments. I know it would have been so much easier to not include a readme of this detail so it's so awesome when a developer takes the time to share their knowledge at this type of quality.