This is an interesting idea! I never thought of it.
I often use GPS when walking cross-country, both off-road and off-trail, often through steep, bushy, tick-infested terrain. I have definitely been in the situation where I am fiddling with those little buttons to zoom in as I approach my waypoint. I think I might using such a feature if it were available! I don't know why it never occurred to me before. For reasons I am not quite sure of, I tend not to use the compass and just stick to the map. I don't like hitting buttons while I am struggling to get to my target.