I'm just starting it, but i rather like that the game seems to know how to pace itself just right, specially after a massive fight or set piece...hell, the last sequence of the tram ride was one of the most tense and frantic moments ive experienced in a game in ages...it was barely a minute or so long, but just a complete "SHITREALODSHITSTASISSHITSWITCHWEAPONSSHIT:..." moment.
I cant wiat to get some more time with this tomorrow night.
Also, on the pre-order bonuses/extras, gotta love the Rivet Gun...its not the coolest or most effective weapon, but using it makes the game tense as hell, and you do get a lucky shot once or twice with its alt fire mode....also, it was nice that you dont need to beat the horriblly lame "ignition" spin off to get its bonuses in this game.
Also, if anyone decides to get one of the DLC suit/gun packs, id go with the Supernova pack, since it includes an enhanced version of the GS exclusive Rivet Weapon.