Paradise City

1. For the Chopper you could give it upgrades. The upgrade of a chopper could be like an airplane like an F-14 Tomcat. The airplane would shoot missiles (like the turrent) at three ammo for one-hundred missiles.

2. A motorcycle. The motorcycle would be a 2 seater with low defense but very fast. It could go for about 10,000 Val.

3. Trained swat. They could have more than just level 1 weapon. Gives them a skill. A trained swat with a level 1 skill would be a good thing for players. They could also get levels. There could be three levels for them at the least.
1) Regular swat nothing new about them.
2) Swat gets the ability to drop what ever class the swat is.
3) Swat can get upgrades guns and a custom face.

4. The pet shop. The pet shop is pretty much useless so far. But what is you add in a simple thing like I don’t know zombie animals. Faster than most zombies.
But along with the zombies there could be trained animals like trained swat. Except the animals don’t shoot they attack and harm the zombies, even killing them.

5. Adding in class combinations might also be helpful.
Like a Medic class and a support class you get the result of either 2 choices; Drop medic station and Drop ammo box or Build barrack and Self-heal.