In short, what you get:
1. Complete modified weapons pak
2. All multiplayer DM boards are modded with a combo of bot vehicles, bot planes,
extra turret weapons, and extra weapons.
3. A 100% server side mod pak. No clients will have to download a thing. Just run your mods, and
let everyone else enjoy!
If you are running a SH server for ffa and/or tdm maps, you gotta check it out.
(Even if you decide you don't want the weapons pak), adding in tanks, planes, and turrets to your MP boards is surely a nice treat and something different for a change. (without changing the face of the game)