When you capture a territory more of your gangmembers began hanging there and help to defend, but they often need your backup for successful defense, and from time to time you will recieve a message saying someone is trying to take your land.
Another cool feature, is that you are encouraged to attempt to woo this girl you save from a burning building. As you go out on dates, her attachment meter grows and as it gets higher, nighttime dating activities change. So far i've gone from, grabing a bite to eat, to cruising around town, and now, to nightly dancing at the dance club (which is DDResque except you use the circle triangle x and square button instead of a pad).
-Brandon