Personally, I find this thing very useful. The ability to zoom in by changing the FOV is a stroke of genius and could come in very handy. I tried the same thing in Enemy Territory, but I got kicked from the server since PunkBuster doesn't like that.
This is just a simple list of all the NPCs I found in the assets1.pk3 file for JK3 (not JK2). Of course you need cheats to be enabled, you can simply do that by pressing shift ~ to bring down the console and then typing in "devmapall" then using
Add submission
