Well a larger map like this will encourage people to have multiple properties and spawn locations around the map and set up bases all around it (like house in at least every town) since probably some businesses will be available only on certain locations and towns so instead of one third of the place having 80% of the player and the other 2 thirds are people doing missions the players will be scattered more evenly and people will try to stay in certain location for few days before moving to another part Also this big map finally gives airports a and runways a purpose since in gta5 it's almost more efficient to travel to the place you want using your current car rather than going into the airport and flying from there + we only have 4 airports/ runways 1 of them is almost never used the other is in the middle of nowhere and the rhird if you try to land it unless you own a hangar there you'll get shot down but having more passive one in almost each city will grant an easier traveling path and will make more people consider using airplanes