It's definitely not a bad game, I just haven't been blown away by anything it's done so far. To be fair I'm only half way through the campaign so maybe the back end is loaded with awesome stuff, and I haven't even touched the co-op. One thing I will say is the guns feel and sound absolutely amazing!
Also, I realize they're trying to shake things up by introducing the dudes with armour that has to breached before you can damage them, and then going a step further by bringing in jammers to add another layer to the combat. My question is, if the bad guys have both this armour technology and jamming capability, why don't they just put both on the same dude and make him invincible?! Maybe it's explained in the fiction somewhere why that isn't possible but I'm not really interested in reading that stuff.