Adding a more elusive economy would be great. Possibly a Stock Market with real (In-game or IRL) or generated businesses to invest in. Players would chose high risk for a possible high reward or vice versa. Also, adding new businesses that are ran by players like factories and warehouses that create food or other things that help out the economy. In short, making it possible for items to not just come off the semi-trucks but have people be able to work and or see where the food, guns, cars maybe, etc. This I think would make the server seem more realistic and create more money making opportunities for everyone. I know this would take awhile to plan out and code and such but I think it would be a great idea.