What I expect from every Final Fantasy: beautiful visuals, great music, and a good story line. A polished game. Oh, and to feel like an FF. Although this one is more "realistic" it still seems like an FF to me... Noctis reminds me of Zack/Cloud from FF7 and Stella totally reminds me of Aerith. There also still seems to be blatant fantasy elements such as the Leviathan in the trailer.

Otherwise I am completely open to changes. I almost expect it. The fact that they change up the formula from game to game is what keeps the series fresh. I think this one will finally bring FF fully into the modern age. Although I love both XII and XIII (XII is an amazing game and I cant believe people dismiss just because of the battle system, XIII's flaws are more apparent but it still has its strengths imo) they kind of stumbled into the modern era mostly because their battle systems are a mix between action and command based. The battle system in those games was a compromise that satisfied neither the people who hate turn based combat or the people that demand that it stays in the series. With XV they are fully committing to change this time and it seems like people are responding better to it.