The thing is, they don't ever limit what vigors you can bring into combat, and all are trapable, so you get some of that depth back. But yeah, I do miss the different kinds of ammo. With more enemies and more and cheaper ammo, you get to shoot your guns much more, which is a lot of fun. The gunplay is all in all an entirely different beast, and I'm not sure which I like better - seems like I have to go back to Bioshock once I'm done.
One thing that's cool about the weapons is that they all look really gorgeous. Even the standard machine gun has a lot of character.
Has anyone figured out how to actually get behind the mechanized patriots? Shocking them stuns them for a bit, but usually not for long enough to make the entire trip around them, and possessing somebody to work as a decoy works for a bit, but the patriots seems to be smart enough to turn towards you once you start pumping out damage.