Hey Michael — yeah, there are definitely many viewpoints on this one. We recently switched medium sizes screens (those around the size of tablets) so that the map is not visible until you click a button, in which case it takes the full screen. Some folks really love it, some folks not so much.
Personally, I would love to see a more dynamic, draggable border so that users can decide for themselves how much screen real estate to view at a time.
I’ll run it up the chain and see if we can’t knock something out. If we do, I’ll sneak your name into the code base as the one who lit the fire for us. :)