Unfortunately my wiring expeirence isn't top notch (I do have some expierience, it's not as good as you might hope) nor do I have the parts, however I am still collecting ideas, parts and expeirence. Maybe I could start after I finish some of my other projects as I have a lot of them on my plate.
I did think up one idea:
wifi pcb
Instead of downloading games it would be online high score board and server cost could be as cheap as $30 with a raspberry pi zero W and cooling system provided by the developer.
Any Idea/suggestion is appreciated.
p.s. If anyone could help find some scematics for some sort of wifi cart or the harmony cart deveolpment that would be awesome, Thanks