I think it looks great, really can't wait to play it, and honestly don't mind if they use the Final Fantasy XV battle system, since despite what many of you seem to think, some people DO enjoy it, myself included lol... it looks cool and flashy, and maybe it'll finally give us the ability to feel like we're playing the fighting scenes from Advent Children, lol :P
I also really like the new model for Cloud, he looks great and not like a deathly ill man incapable of holding his sword. Barret seems to have changed too, and I also like this new look for him, it's actually more what I was expecting in the first place.
As for the voice acting, it all seems pretty on point for me, although am I going crazy or does Cloud sound awfully similar to Noctis? o.O