IMHO, some touch mechanics in U:GA is questionable (e.g., melee). I think the touch puzzles are generally more interesting.
I guess I can't speak for the touch implementation in anything outside of what was shown in the demo -- which amounted to tediously swiping the screen. I don't have any problems with touch mechanics, but they tend to annoy me when shoehorned into gameplay that's working fine without them. If a game is entirely
designed around a touchscreen, I generally am cool with it.
As for claustrophobic feel, don't worry about it. The real game has more variety. There are corridors, vertical maps and open (sniper) levels.
I'm very glad to hear that, but the weird thing is I'm not really sure that was my concern. The "claustrophobia" was more a result of never really feeling that I was able to see this world as I wanted to. When playing the PS3 Uncharteds, there was always a sense of awe, like I'm being enveloped by the environment.
While playing the UGA demo, I think the best analogy I can come up with is being trapped in a closet, peering past the slightly ajar door into the game world. It's like being forced to squint to see where I'm supposed to go, or what I'm supposed to do, versus looking out at the space before me.
I just don't know that holding this great, big world of Uncharted between the palms of my hands is the way I want to play this game.
Then again, who knows, maybe this is in fact all just a result of the cramped demo sections, and I'm misinterpreting my own feedback. It's really hard to say.