What kind of laws can we expect, if any, in places like Pyro? Do the gangs institute their own laws? Do the gangs enforce laws in their areas? Is there a code?

The hope is that, yeah, they would, or the expectation would be that the gangs maintain their own security in their facilities. But what those rules are might be different than an actual law enforcement security type thing. For example, if you go into Lorville and you start punching people in the street, the cops are going to sweep in and arrest you, and probably arrest them, and then probably arrest your family and then your cousins and your friends. But in Grim HEX, a Nine Tails security person might not care, but they will care if you pull out a gun and start shooting at Nine Tails people.

Yeah, it might rely more on the hostility system than the law system. Are you their enemy or not?