>>16705206That I'm not sure of. But the height of the player character seems like it would just have an illusory effect on the player, rather than make an actual difference.
Something that probably DOES aid in making Kalos feel small is the ability to break free from the grid with the skates/bike, and just being able to walk/run diagonally in general. When you think about it, any time you travel diagonally, that's roughly half as much traveling as you'd be doing if you were forced to move in four directions like Gen V and previous.