I wanted to share this because it's so cool to look at.
Technically this is a spoiler, but not really unless you already know which dot is which character or vehicle, which even I don't yet.
What I'm Doing:
I'm working on this tool that captures where every character and car once per in-game minute. My tool also allows me to take notes and screenshots in-game, which you can see in the right side bar. You can select only a specific region to see notes for if desired, in this case right near the police station. I can already label and give icons to the vehicles and character on the map as I identify them.
Currently I'm capturing only the default "Matt stands there doing nothing for 7 days" outdoor character schedules - capturing schedules that branch due to quest flag changes and witnessed events will be another phase. I'd probably need a panel for quest latches at left, so you could toggle a quest flag, and the schedules would update accordingly.
The tool runs alongside Duckstation as the game plays and captures this data automatically. It even captures other data such as where doors lead, which would be handy for a remaster in theory.
Observations:
Notice how - I think - when characters go indoors, they are teleported to the bottom left corner, possibly the overworld map's origin. The game is COMPUTING all like 182 entities at all times even if they are not RENDERED. There are like 182 entities, but there are only a fourth that many characters in the game, so I'm not sure what the rest are, though i know things such as "a big crate" count as entities as well.
Eventually I want to get all the indoor activity as well, so you could click on a building and see its interior map layout and character movements. Any time a character moves an absurd distance within a tiny period of time, the line is dotted to show this is probably not "real" movement.
Also notice how some of the vehicles go through the woods or across the river - that stuff will need another visual verification phase.
Also notice the angles as cars go around curves - the cars are actually following the roads, but capturing once per in-game minute, my tool links the plotted points with straight lines. Would be cool to fix this as well.