Show or provide somewhere, what height/scale the isolines indicate.
-They appear to be 1000 ft increments.
With a much improved World Map coming, I’m wondering if there will be any improvement to the VFR map. Not spotted it in any of the videos for SU5/XBox.
But yes I agree. Having an idea of terrain height on your current route is the difference between clearing it or not 
Good point. To control the terrain hights I actually use LittleNavMap and keep it open on the background.