Break the city into 4 quarters being their own regions which must be loaded in every time so that it's easier to travel without stressing computer resources accounting for every event in every region, blatantly map out where the checkpoints between regions are, if in air vehicle, load in region once over specific area? Maybe not even having a loading screen for changing regions but just discretely loading resources the closer you get to a certain area, then pausing for a few seconds once at a certain area to transition the player count the user sees to the new player count of the region currently being inhabited. But keep a global chat? Or is Identity going to focus more on immersion and using other ways of communication than a OOC global chat?