I'm hoping for the Shinra mansion to be re-imagined as a dungeon or new big open-world location to explore (can rename it and change a few things for lore if they like), it's the one thing from VII I'd like to see, that could have the vamps you crave
I know we have Haukke Manor and its one of my fave dungeons (both versions) but I always liked the Shinra mansions creepy atmosphere, the music and the monsters, a nice 3D version with some cool lighting, particle effects for atmosphere and setting would be good.