"Activision and Infinity Ward decided to go back to the drawing board with multiplayer game modes and start entirely from scratch."
Maybe they should just add easy PC LAN support back in
"We took the list of game modes and we cut it away," executive producer Mark Rubin told Game Informer. "The idea was to go through and pull each one out and go, 'TDM [Team Deathmatch]... should we keep it? Well, let's talk about why we should keep it.'"
http://www.shacknews.com/article/81343/why-call-of-duty-ghosts-discarded-old-multiplayer-modes