I also did the 6502 and added a Pi Pico for VGA output and USB input.

I'm still working on ways to add more to the design -- it's been a fun hobby. I actually enjoy cutting the wires and physically putting it together.

If anyone wants to avoid adding a full scale computer just to get TV out I recommend the late Don Lancaster's The Cheap Video Cookbook and Son of Cheap Video.

See https://archive.org/details/donlancaster_socv1/page/n3/mode/..., https://annas-archive.org/isbndb/9780672217234