Option to change the size of the navSphere/Map on mobile.

When you open the navSphere (that one at bottom center) on mobile, It is so huge that it covers the craft. For example if you fly an airplane and you wanna take a quick look at your "minimap", it covers nearly the complete plane.
I know that there is an option for UI scale, but it's already set to the smallest usable scale.
It would be great if I can change the size without changing the rest of the UI.