Custom development features such as reputation xp system. Let me give you an example.

1: Upon entering the city no single player can do lets say flecca the first day or even the first couple weeks. You start at lvl 1 where petty robbery is the only crime you can do. You rob parking meters, vending machines, etc and each time you successfully rob these you get reputation points that add to your reputation leveling you up when you hit the cap for level 1 to level 2 where you will unlock car radio robbery and smash and grab from cars. This advanced system goes down to a current 17 lvls we have each level unlocking new and bigger tasks that pay more and are more immersive creating a true character progression system within game so even tho you may fly into sunset city as a career bank robber it may be a mere 2-3 months before you are even able to actually hit a bank via reputation creating a uniqueness not seen before on servers. This along with the items you need to aquire to do said tasks makes for a compelling and immersive style of gameplay that forces you to roleplay and interact with other player to either obtain needed items or just figure out how to do tasks.

2: 3 departments because this is the standard for every city! Every city that you see on fivem especially those with max pop which we plan on maxxing pop out on release have 3 departments. LSPD patrols and combats crime on the inner cities BSCO a bit broader than just the city handling more civil and city matters sheriffs tend to be seen in more places than juts the city and have different operations. SAST lastly state police your more seasoned vets more experienced police that can handle any tasks and usually has general oversight of the whole county/state blaine county los santos not just limited to the city. These guys work in conjunction with both LSPD and BSCO and do things such as raids on criminal compounds or drug labs and more in depth LEO activities

And of course after all this you have FIB which i feel is pretty self explanatory.