it seems witht he ammount of work they put into it why didnt they just make a new city or changed some of the buildings/textures/etc. and called it a new one?
"Hall: Like all of versions, we have tweaked the existing targeting system. I wouldn't call it a complete overhaul, but we definitely have taken a fresh look at it, particularly in regards to how it relates to the hand-to-hand combat system. The combat system has more depth to it than any other Grand Theft Auto game. The targeting mechanic has been tweaked, but the biggest change has been to unarmed combat - you can now perform grappling moves and throws, you can get on top of an opponent on the ground for ground domination, and more."