It got delayed because the origial release date was too packed.
Think of it logicially, Battlefield, COD, Skyrim, etc are all out at the exact same time within a week or two of each other. They would have lost sales as people would have bought one of the FPS games over ME3. I know I would have done.
I bloody hope they haven't put MP in it... Future ME games, fine. But I don't want my epic battles with the Reapers to get ruined because they decided to stick MP in and spend a little less time on the SP.
If they are adding a MP mode they should at least try something different not just capture the flag, deathmatch ect, if its just the same as every other MP mode it wont attract many new gamers & probably annoy at lot of Mass Effect fans.
I've not followed the link as I hate spoilers, so apologies if I've missed something!
I don't see why every game needs multi-player. Single player campaign and plot is still the most important element of games for many people. It works well in some games, but others need to be left to play solo.
The only MP I would ever like to see on a ME game would be Co-op. The game is squad bassed, so it could be good.
Probably a new campaign with new characters (you can all be Shepherd, even though he/she has many faces!)