Bucket Mouse on Esty has made these new PCB that you take some components from the Original Gameboy and you put on this new board. And you got yourself a new Gameboy. He dose this for something he Calls the DMG Color and Pocket Color. Now you don't have to buy PCB from Him. You could download the gerber files from his Github and order the Broad from PCBWay. So why couldn't you make a Board. Put the Atari 2600/5200/7800/ CPU on it. Put Hdmi Port on it, and have Updated Atari. People always say with FPGA Console you need Mass Market. Well for this, You don't need a mass market. Sure it will suck for people who don't know how to solder. But at least its something.
https://www.youtube.com/watch?v=4U8Tqu7uxLo