I hate PzIVs

[Steiner14]

This very much reminds me about my own playing style. You are down in the weeds and never have the wish to adjust waypoints? Either you are the perfect waypointer or I am a spastic.
With the importance (and beauty, btw) of level 1 in agreement, let's take the case that a brilliant LOS is discovered and a unit, which could used has a plotted path nearby. Going up to level 3 turning around and searching for the corresponding units and then going back and searching the exact spot again sometimes is so frustrating because it would be not necessary shown by CMx1. And sometimes a misfortunate click and the unit is deselected... Especially wonderful on larger maps.
With clickable waypoints you stay where you are and click the paths until you have found the wished unit.

And this is even the less cumbersome situation. When it comes to crossing bridges without creating a jam with several units, the forced rotating of the camera to select each unit and then turning back again to adjust a waypoint or add pauses is awful. It is so bad, that sometimes I even accept a worse crossing only to avoid the clickfest.