Add pickpocket to thug.
Add Sports Retailer, who sells Sports Equipment, such as Baseball Bats, Crossbows, Bicycles and Gold Carts.
Add Car Dealer, who sells Junk Cars, preferably from the SCARS pack, so they can break down.
Add Mechanic, who can repair these.
Add Priest, who sells Holy Water. He can shoot Vampires.
Add Vampire, who sucks on people for additional health.
Add more stuff to medic, like Health Stations, Pills, Medkits, etc.
Add Mail Man, who can deliver bombs, guns and other packages to people legally, as well as plant bombs like a hitman.
Add Suicide Bombs/ Car Bombs to terrorist leader.
Add SWAT Sniper for donators. The exact same as swat, expect they spawn with a sniper rifle. Then make SWAT for everyone.
Add Hitman, and he spawns with nothing. Contract Killer now spawns with an AWP/Rifle/Pistol, etc.
There's so many creative ideas we can have in a few minutes.