A former dev has advised the GTA six map should be smaller sized plus much more densely packed. Having said that, as leaks have continued to trickle out of Rockstar, modders have recreated the GTA 6 map in GTA 5's engine which provides a sense of its enormous scale. https://holdenxvsro.blogripley.com/37017363/an-unbiased-view-of-grand-theft-auto-6