A few days ago, there was a report that the upcoming GTA 6 will be a very different game from its predecessors. With the news reverberating in all gaming circles, it was only a matter of time before more information came out.
We know we're supposed to control a male and a female character, but GTA 6 was supposed to be a much more ambitious game with four playable characters at the fore. Likewise, Miami will most likely be the city where the action takes place, but information circulating on the Internet suggests that Rockstar originally envisioned the location in three different cities, both in North and South America.
Seeing that ambitious plans like this are taking them right back to where they were when they were criticized for forcing workers to work overtime, Rockstar decided to tone down the experience and create a more relaxed and healthy working atmosphere that should ultimately result in a better game. Maybe it's better that way because who knows how long we would have had to wait for the game if it had three cities at the start. This way, that plan is not completely written off, but accompanying cities could be added later, sometime after the release of the game itself. This does not mean that Miami/Vice City itself could be insufficient, as it is mentioned that it will have more interiors, or closed spaces, than any previous GTA game.