@wmarcio Yeah I am def going to look into that. I hadn't considered modding the consoles themselves.
The lack of a GPU card was my big concern about something like a PI or Laptop. I've read mixed results on those.
Otherwise I'm thinking maybe I should consider just building a small form factor PC with a video card. One thing I like about retropie is that it is always being actively worked on. I'll keep considering all options.
Want a good combination of convenience and price.