Why not have a tab, just for players to request stuff to be imported into the servers. You can tell people what you think would improve the server. For example: Maybe add in more weapons some may say. Why not also have a graphics tab? Graphics contests will be held and the winner would get a certain amount of money on the server.
No, I mean a tab in the forums. On the homepage under the shoutout box, you can have a new tab for requesting updates/guns/playermoddels. Also a contest for graphics artists to make items to import ingame and get a reward for it. Example: New Prop making contest. Must be a volley ball. Or something of that manner.
Alternatively you could post suggestions in the Flood forum, and a thread pertaining to the graphic contest could be created.