A radio job in which you can broadcast sounds through a microphone you spawn to those who buy a radio. ( Make a max of 2 radios each person can buy.
Custom cars in which you can lock or unlock.
Change "zennies" to "money" 
Add fuel to cars.
Add money printers which can catch on fire.
Make a simple crafting system.
Finish houses.
Add a movie theatre manager job in which he can choose a youtube link to play  on a scree.