There is a mechanic/addon in DarkRP and various RP gamemodes that involve deleting or ghosting props if they are spawned too quickly. Also, this mechanic could stop people from spawning props for a few seconds, if they continue spamming props. It has been known that a simple way to crash the server (or any server for that matter) is to spam props everywhere, and physgun them to cause massive lag. If this mechanic was added, it would at the very least discourage griefer's efforts to spam. This mechanic brings up one question. How would it transfer into Flood?