A couple of things I noticed from the trailer.
Biggs doesn't look like I imagined.
Did they steal Adam Jensen's sunglasses and give it to Barret?
Barret's voice acting is horrible.
Then again all the voice acting in most Squeenix games are sub par just like Advent Children.
I don't mind the combat changes. Everyone else is livid about it. I just hope the Materia system is still being used.

The game is still in early development so maybe they just threw together what they had for the presentation.
I just hope the voice acting is a simple placeholder for the game trailer.
If not I hope they include a Japanese voice track and English subtitles when the game releases.