As I have personal stake in developing games built in tactical battle systems, that was basically the only use case I was thinking of lolLike I was saying a tactical battle system like final fantasy tactics is the only case I see this can be useful for battle. but I still think this would be great for exploration as it adds a level of depth in which developers can hide secret items and really make scenes in the game have more of a scale in the size of the world. if you haven't seen or played breath of fire 4 I highly suggest you look it up. That game is a masterpiece.
Possibly tower defense as well.