Well, I've finished the game on both good and evil now. Just got to finish off some trophies, now (def going for the plat on this, actually quite easy to attain, considering).
I'd have to say that I'm very pleased with it's presentation. I loved that they kept the comic book style to the story line, but really glad that they had the proper animation for cut scenes. Really brought all these characters to life. And there's, of course, (numa) New Marais (I can't say the name without putting numa first, lol). I did kinda miss Empire City, but each area provided a new challenge, and was even more impressive detail and certain beauty.
I think they did a real good job fleshing out the characters. Cole's new voice was noticeable, but was similar enough to not be distracting. Even his slightly diff appearance just seemed more of growth and experience. Nix and Kuo offer a nice change (and c'mon, they're both pretty darn sexy). But what I really was impressed with was Zeke. He just really kinda annoyed me in the first one, even before his betrayal. But they did a great job of redeeming him in this one, and I truly enjoyed his character.
I enjoyed the fact that they didn't change the gameplay much at all from the first one. But that did still produce some challenges as I thought it wasn't as crisp as it could and should have been. Especially with all the number of glitches I encountered. Enough to drive you mad at times, especially when you're first playing and realize that the first time you fight the militia, they're about as tough (for your first time play) as the First Sons were in the first.
This is getting long, so I'll make a second post with other thoughts.