Shieeeeeeeeet. I wasn't so sure about a combat change, but that looks pretty good (even if we don't know how it works, aside from assumptions). I really like that there's an ATB feel to it and that it isn't purely action-based. Can't wait for them to explain how it works.
Also, unless it's another XV E3 2013 trailer, it looks more advanced than I though it'd be. I wonder if the rumour with CC2 and Unreal 4 is true, then (I had almost assumed it). The wonders a nice engine can make, if true.
Really loving the environmental look. The battle scenes in the plaza look fucking amazing, seriously. I was a bit worried about the artstyle, but it looks more anime-like and less porcelain doll-like (like AC, which I hated).
My only (silly as hell) grip with the artstyle is Cloud's hair and eyes colour, which I'd like to be brighter: after all, he's been under a shitton of SOLDIER experiments. And Barret's sunglasess, not really feeling them, although they don't look too bad.
Also, I hope they keep Barret's over the top personality (keeping the damn stereotypes to zero, this time) as well as Cloud's. Make them as crazy as they were in the game, I want to see some good bants there.
And oh, my man Tetsuya. I'm really happy that he seems to be comfortable with all this: felt kind of bad for him after the whole XV thing. Now we have two big FFs to look forward to.