As far as using classic games, these would be my picks:
-Doom (Most Wanted)
-Pitfall Collection (Pitfall, Pitfall II)
Maybe you could make special editions of those or something. As to new/homebrew games, I would suggest getting some games from the makers of the AVS. If you're looking to expand and include your own Prometheus exclusives, why don't you release the code format or a compiler and hold a contest? Maybe the winner could get a prize of a sort, and game and its properties would become yours, and you could sell them alongside the Prometheus as launch titles. Letting wanna-be developers know the type of code is essential.
Also, with the hardware, I would like it best if there were 2 main controller types: Keyboard and Pro. The Keyboard would be similar to the ColecoVision controller, but with higher quality. The Pro would be a D-Pad with 6 face buttons and 2 triggers. This would allow for developer flexibility and ease of porting. For hardware, I would include 4 controller ports, HDMI support, and all the typical things. Maybe you could create an online modem later??? That would DEFINITELY be interesting.
Edited by GemWare Games, Sat Mar 11, 2017 10:07 PM.