Gang wars... hmm. That sounds like a good idea considering basing gangs go to war and always chicken out after a day and call peace. Maybe a war could have a certain amount of time, similar to Clash of Clans, the gangs have war records and both leaders must accept a war request to be entered into a 1-4 week war.

This is actually a really good idea, all the stats will be recorded, like how many kills your gang got against the opposing gang, how many hours you've held against the other gang and how many deaths your gang had. You can forfeit from a war but it should come with a price, something like $5000 gralats and a negative stat to your war record. This will encourage pking a lot and sure will bring some more attention to the basing world