Totally bitchin!! I love the iron sights aiming. That'll add more of an FPS feeling to it. Then with the remote detonating mines I saw there, I'm just getting all kinds of wicked ideas for that. The kind of strategery you can set up with that is far greater than that of the old proximity mines in FO3.
Then I saw up in the corner "Something Legion Has Gained Reputation." I'm still unsure how the reputation system will affect what goes on. I've heard that New Vegas will have more focus on the effects of your choices, so that will probably have a hand in it.
The walking through the city and the chatter from the hooch's seems like this will be even more of a mature title than FO3 was. Seemed kinda GTA style to me. I wonder if that will affect your reputation?
And just remember everyone, roulette is a suckers game. There's no implementation of strategy, just luck. Do yourselves a favor and stick to the blackjack.