ok so this is my idea of a perfect gta 6 liberty city.
the map since it would be well into next gen could be the size of 10 los santos/blaine county. plus the size of the interiors and the underwater.
the size of algonquin alone should be gta 4's liberty city.
included in my idea is the city of liberty witch is based on nyc.
schlong island based off long island with the carraways based on the hamptons
eastshister based off westchester
bison based off buffalo
and carcer city based on albany.
driving from liberty city to upstate liberty should take atleast 20 minutes and all rado stations should change to different stations and different dj.
the mountains should provide enough open space and interesting things to keep the map interesting.
mount marcy the tallest mountain in new york should be included.
also one thing, if you are ontop of the rotterdam tower (empire state building) you should not be able to see the entire map like in gta v, the view should be limited to the north point of eastshister, like in real life you cant see albany from the empire state building (i tried).