Divide the city into districts and add some new buildings.
- Financial District
Cooperate Offices
Hotels
Credit Unions / Banks
Law Firms
Jewelry Stores - Entertainment District
Car Parks / Garages
Motels
Lounges
Casinos - Industrial District
Factories
Union Offies
Repair Shops
Gun Stores - Any District
Pharmacies
Apartments
Bars
Clothing Stores.
I think that by giving the civlians more places to be and things to interact with, it would add a nice sense of unpredictability in the civilians.
By separating the buildings into districts I think it would make each city feel that much more unique while also making it feel like the player has more freedom to choose HOW they want to play the game.
Like being able to deal in the industrial district with the blue color workers who work longee hours but are less likely to help you. or in the residential area solving more intimate homicides.