Im sorry but your talking nonsense. Creating MP worlds takes months/years of development, especially for a game thats not designed from the ground up to the multiplayer. It takes a team of developers hundreds of man hours to do MP coding for ANY game. The amount of data required for MP in a game like TES would mean it would be gutted of SP content. Everyone lauds Borderlands for its Co-op but the fact is the game has BUGGER ALL content in the vanilla game compared to Skyrim. Modelling isnt an issue, network code, latency, routing protocols are the issue in MP games.
Read my other post above. All I want in a Skyrim multiplayer is to be able to run around the map (Hell, split it into chucks and give us loading screens, I don't care) and kill things with friends. I don't need quests. The devs already have the modeling done and NPC coding written. It would just be a matter of loading a nerfed version of the world (No quests), player data (the armor, weapons, etc that they currently have on their character), and setting up a network. Limit the multiplayer games to four players, that would be perfect. Write code so that models and such from a certain distance from a player won't be loaded to help reduce lag.
I don't want Skyrim the way it is to be multiplayer. That would be absurd.