So this sounds semi like something I was talking about recently with folks.
The idea might be to seed random 'scenes sets' into the grid itself.
Then idea came about descing an abandoned hotel. We have +rent code and the like already so it shouldnt be too hard to implement. You could set up a building/area/whatever and do your +rent or +explore or something and it makes you a temproom/brings you to a room. What that new room will have is a description of the area, and a small randomized lists of possible encounters to spark the imagination.
It is not something as complex as a full PRP, but a way to give certain areas some more flavor, to help lubricate imaginations, give some minor threats to urban exploration, find haunted areas, generally little things seeded in specific places to encourage RP and lighten the load for spontanius creativity.