Claymore
3x3 Eyes
One prospect I'm super excited by - the banter. Oh man, it made me like characters I had almost zero interest in coming into XV. Meanwhile I love VII's cast merely by knowing how they act in cutscenes. How great will it be to actually get a sense of how Yuffie interacts with Cid? Or Barret and Red? I'm pretty sure that's one part I'm going to adore.
OMG this. XV did a fantastic job on this account (aside from the annoying interruptions and then not picking back up on those conversation threads). It made the characters feel more real and relatable whilst providing a great insight into how they interacted with one another. I can't wait to hear the banter whilst traversing with different characters. It would also encourage playthroughs with all the characters and different combinations, lol.
Like Twilight just mentioned, there are a lot of natural segmented zone area, so I'm not too worried about how the world will be presented.
For me, the real fear right now is just what this battle system will be, and exactly how they are going to handle Materia.