I'm personally very excited for the multi-player. Multi-player almost always provides me with much more gaming hours than the singleplayer. And oftentimes, a single moment of multiplayer can be just as enjoyable as a single moment of singleplayer for me. I don't think there's anything about singleplayer that somehow makes it a bigger priority than multiplayer. It's just different tastes for different people.
That's where I disagree with people who disapprove of the multiplayer because it takes resources away from the singleplayer. People have to realize that the singleplayer isn't inherently more important that the multiplayer; it comes down to your own opinion and preference. I could perhaps understand if the singleplayer is clearly bad due to low resources. But if the single player is excellent, then it's extremely selfish for you to demand even more resources at the expense of a group of players missing an entire mode.
Besides, I fully trust Naught Dog. This is the team that worked on Uncharted 2, which had multiplayer that didn't stop them from making one of the most praised singleplayers of all time. The multiplayer wasn't amazing. But it was better than most multiplayer games these days. And I think it was definitely worth the investment by Naughty Dog. If they feel that they can complete their story by using only a certain amount of resources, then I say let them create a multiplayer mode. They've already proven successful at doing so.
And they seem to have much more freedom and time with this game. Since this is the team that worked on Uncharted 2, we can assume they've been developing the game for 2-3 years already. By the team the game releases, they would have had 3-4 years on this title. That seems like more than enough time to wrap up whatever story they wanted to tell while also creating an enjoyable multiplayer mode. It seems to me like they decided their release date without too much pressure from Sony (of course I can't know for sure). This tells me that they feel that they will be complete with their vision/objectives.
As for the multiplayer being tacked on, we'll have to wait and find out. No use in blindly drawing assumptions at the moment.
And besides, multiplayer is fun as hell. I'm interested in how it'll play out. Left 4 Dead style, I hope. Or better yet, they should create a unique style never seen before. I'm hyped!
