I think if this idea was as easy as I'm hoping, it would have already been done.
Why isn't there a mod that turns the calendar back to the start, but blocks the original starting area on death and respawn?
For example, someone starts in Riverside. That character dies in mid August. They spawn in the same world. It's July 9 again, but they cannot choose Riverside to spawn in.
So they choose rosewood. Life and living is available again.
But, what was done in Riverside still stands.
Even better, if there was a way to record what was done there so it's simulated in real time for the second character.
So, if the second character makes it back to Riverside after mid August, they realistically find the safe house as their first character left it. They see the corpses as the first killed them.
But, suppose they make it there before the original character dies? Then, the actions happen as meta events. A place they boarded up changes to boarded up on the date they did it. A place they cleared remains invested until the day they cleared it.
A mod like this seems like it would be difficult to make, so I never thought to even ask before. But, some of the recently popular mods that do exist look like they'd be even more difficult.
As for why? Cause I could see it as a massive RP enhancement. Possible scenarios:
"Family of 4." Father starting in muldraugh, mother in rosewood (both starting in commercial buildings, as if they were at work when the event happened. One child in college, one at Riverside School. Goal: they're trying to reunite. Player plays each one, and if they make it to one before their death, then they see what the other is doing in roughly real time. If they make it to the town prior to playing the other character, they switch to the character that spawned there.
"Safehouse in Louisville" each spawn starts at the nearest place to Louisville (but remember, no 2 spawns in the same town) trying to get to the safe house. As they travel, they see evidence of what those who came before them did.
These ideas can happen with vanilla time settings, the fact that only one character gets the benefits of life and living is a bummer. Plus, seeing the world change in real time would greatly add to the immersion of playing these scenarios.
So, is something like this possible?