Shape the city.

I reckon there should be backpacks in the game so that players can actually craft or buy to hold more items and then also add so that when you die they drop instead of your stuff going everywhere. Allow people to put on the backpacks or just carry them in their hands, slowing down their moving speed but being able to pull one of their mate's things out. Make it sort of separate to the main inventory system so that they can still keep stuff on them that will drop out when they die. It gives it the ability to kind of hide bags around the place, put drugs in them, put guns in them, hide them behind the police station, hide them in bushes, and be able to actually deal with the inventory like that.

On top of that, slightly another thing, having tiny little air tags or tracking beacons that players are able to craft or buy that are not illegal by themselves. They can place them on their own car, in their backpack, or they could even place them on other people's cars with upgraded versions or modified versions for those ones. When players travel around if an air tag follows them, they'll get a notification, like what they do in real life when there are things following them. There are personal and then illegal ones so that people are able to track their own things and also able to track other people by placing air tags in their car storage or underneath the bonnet, things like that. Extra bonus to be able to view them in the phone or on the website, even as an interactive map where you can track your own air tags, manage them, play sounds from them. If another player finds an air tag following them, they are able to play a sound to be able to try and track it down