We really could use 5 spots to snap a token onto a grid; each of the 4 corners and the center. When I create a token for a small creature, I usually make it 0.67 units wide and long. When I do this, I have to snap it to the top left corner (alt gets annoying for me at least). With a center snap, these tokens would be where they should be without having to hold the alt key. The corner snaps would be very nice for TINY creatures. Since 4 tiny creatures can fit in a standard box, this would allow a DM to easily snap 4 tiny creatures into one grid box.