FOSS gamedev and creative worlds

i want to make a FPS shooter server, but need ideas and mods, what would you like to see in this server?

For the guns, either stu's simple shooter or my firearms.

You may also find camouflage interesting.

If you are looking for some war vehicles, try simple helicopter, cars, and meshnodes.

Wait.. I got a dejà vu but can't find the other topic about this..

However, kaeza's suggestions are good.