[ReaZoN]

Hello,
I am currently working on developing a Team DeahtMatch gamemode.
The following systems are ready:

Logging System (Logs)
Teams, Classes etc. etc. etc.
Register System – dFile Based
Weapon System
Weapon EXP System
Gangs System
Conquering Zones for EXP and Money
Banking System
Vehicle System
Kill Streak System
Anti-Spam System
Colored Tags System
Illegal Job System
Ping Auto-Kick System
Activities System
Administrators System

* I have some systems in development that are unique, therefore I will not post them here.

Do you have any suggestion for some MUST-HAVE systems for me?
(I'd like if the systems were unique, that you will invent..)