[DrEvil]

Unlikely. It's probably relatively easy to sniff the network data and possibly figure out what is being sent from client to server, but in the end that doesn't really give you much.

Unless your 'virtual client' was a hacked up client of the game or did some heavy reverse engineering it couldn't do much.

Your client wouldn't have the map loaded, so you couldn't do raycasts and such needed for a bot to actually 'see' the level. This alone cripples the concept, though there is other things that the game client & server loads that the bot needs. Your virtual client would have to do prediction for all the entities it knows about, which it probably would have no idea how to do.

How are the people getting AI into MP ? Does the game have a proper C++ SDK where you can make signifiant modifications? Last I heard it wasn't going to have much more than a map editor and maybe some scripting support.