It's not going to 'svck' but I'm sure some people will be disappointed, with all this crazy hype.
I don't understand why people want to know everything about the game before playing it. I don't care to know all the specifics about which perks are in the game, or quests, or whatever, I'll see it when I play the game. I don't want any spoilers. In fact, I think that today is the last day I'll be on the New Vegas forums until I've had a chance to play the game myself.
For example, I've heard people talk about a 'Mr. House', and I have no idea who this is. And I don't want to know.
Some people are treating it like it's going to be the game of the century, and with that kind of mindset you can only get disappointed, even if the game is very good.
One thing we'll probably see (again), because of all the hype, is that people showing their opinion about the game are probably going to be posting either of two extremes: It's either the best game ever, or it svcks. After a while things should calm down again (and patches get released) and people will say that the game is 'good'.