Adjustable Navigation window (Shortcut N)

the Size of the Navigation window is very small and hasn't changed for years, so you just cant do precise panning. The idea of viewing the whole "Used Area" is useful so I believe it has better potential than this and needs to be upgraded by doing simple things; like just making this window bigger. and it could be much better if we can zoom when navigation window is active. Best example is make it a "Minimap" like in strategy games. Also Make it more adjustable in the settings, because there isn't any setting for this. or completely change this as Autodesk Sketchbook navigation style. (you press spacebar and a navigation tool pops up).