Is it possible to experience two opposite feelings at the same time? I don't know, but my reactions to Bioshock Infinite can be summed up as both OMG!!! and WTF...

THE OMG REACTION

1) New Bioshock - that's a braingasm in its own right.

2) It seems to be related to the Rapture storyline, since the guy in the trailer was being drowned in a tank with a model of Rapture in it.

3) It seems to rely on 'plasmid' combinations between the player and Elizabeth. Possible co-op?

THE WTF REACTION

1) Another secluded city - in the sky - with specialized values? I can't decide if this is uncreative or creative.

2) And how will they get away with that? If there was a model of Rapture in this flying city, Andrew Ryan must have been there. There was never any reference to it in Bioshock 1 and 2. Also, what about the Big Daddy models? Nobody could have known that they were going to make Big Daddies since they hadn't discovered the sea slug that made ADAM. It seems like they're using the Bioshock name to sell this one and the trailer was merely symbolic...

3) Again, where do these plasmid come from?

There's more... but I'll wait till I see some gameplay.