highlighted potential drop target while dragging
highlighted potential drop target while dragging

unfortunately, this is more complex than it seems; cf. inline comment

however, merely scaling isn't actually that helpful because the eventual
position depends on the exact drop position - so we'd actually need to
simulate a drop

also note that there are z-index issues, as the drop target is hidden
beneath any subsequent tiles - however, applying the previously used
z-index hack (changing DOM order) results in the scaling not being
animated

yetu/pocketry