According to the book Gangs by Ross Kemp, New Zealand has more gangs per head then any other country in the world, with about seventy major gangs and over 4,000 patched members in a population of about 4,000,000 people.
Probably outdated info, but interesting nonetheless. If NZ, it whould have to be south auckland. Even that would be unlikely.
The story sounds a bit too much like San Andreas -Four childhood friends -Protaganist goes away for a while -Comes back and has to put things right -High ranking member of a street gang But I like the concept
Hate to give a different opinion here, but I like the way the current system makes you want to stay alive. Being careful and trying not to get killed in order to get the assault rifle was actually a good thing. Also, you shoulden't be going halfway across the map to get a gun and body armour. There are advantages for the kit system, but this is one of the things that would take away GTAs individuality.