I reserve judgment on any part of this game until I play the demo. I am not a person to make assumptions about thing before I have even tried them.
And honestly the L4D boycotters are whiny babies. Valve is a company who is famous for not getting things done quickly.(see TF2) When they are able to provide 2 games in 2 years people start complaining? Does not compute.
I don't have a problem with them making games quickly, I have a problem with them announcing a game so shortly after they released the first one. With TF2, they released that game awhile ago, and they keep on supporting it with Content, and new stuff. With Left 4 Dead, they just released the first game, announced a second shortly after the originals release, they could have just kept adding content for the first game for awhile, and then eventually decide to make a new game.
I mean, like I said, with TF2, they keep adding content, and about 3 years later tons of people are still playing it, I'm sure if they just added Content to Left 4 Dead, lots of people would still be playing it a couple years from now with no need for a second until the players want one. Left 4 Dead 2 so far doesn't look like much of an improvement over the first, and if they had decide to stick with the first game, and added content to it, left 4 dead 2 could have probably been some of that content.
And I will try the demo for the game once it's available, I'm not saying the game looks bad, I'm just saying it doesn't look like an improvement over the first. But when I play the demo and it's a lot more then what is currently known about the game, then I will get it.