I'll just leave it up to the devs to decide how to implement it.
It's gonna look so good. And probably will be a GOTY nominee. Can't wait for the tech analysis.
The E3 demo looked crazy good for an open world game. They just have to have an exceptionally good streaming system in place to avoid pop in and LoD issues because of how fast you can travel with a car and gliding. Hopefully the game continues to look better as the development goes on and not vice-versa like seems to be the trend. Definitely getting all the multiplats on PC.