In my eyes Square Enix have won E3 just with this alone... the battle system looks like it's gonna' be amazing, they've actually managed to make it action based while adding more strategy than the original game, the scorpion boss battle looked insane! Also y'know... they showed Tifa! And her gameplay looks so good too!
My only worry for the game is the first part being on PS4, and the others being on PS5, so it'll sort of be one game over multiple console gens... I'd like to see them all on one console, so if that ends up being the case, I hope they port this to PS5 too so I can have them all together, lol. (Yes, I know PS5 will play PS4 games, but as a game collector I'll get super OCD over cases that don't match, lol)