Q2VKPT seems like a rich area of research. If the entire pipeline could be automated. Using efficient subdivision surfaces and deep learning to intelligently predict light-transport simulation. Then we would merely have to input the game assets of a classic game title. And the output would look like Bioware's Anthem ;)
Train the game upscaling AI with high resolution textures, then ship the game with lower res textures. High quality rendering with smaller file sizes, though won't be as good as the original pictures.
Not very useful in reality, but would be a pretty neat proof of concept.
The question is: would the AI data be smaller than shipping the high quality textures in the first place?
There are plenty of texture upgrades available for Quake, but I haven't really seen any model updates.
So yes, upgrading models and even the level geometry would be very cool IMO.
https://www.overclock3d.net/news/software/classic_doom_has_r...
https://www.resetera.com/threads/ai-neural-networks-being-us...