Interesting article. I think it would be really stupid to not reuse stuff if your game is set in a realistic universe (would be different for a cartoonish universe).

In fact, it would even be a way to avoid using AI (even if I think we’ll end up with devs reusing stuff and using AI).

Then you can use colors or lighting to create a different feel to the game, just like different movie directors can film the same place in a totally different way.