Grid: disable auto subdivision Is there any option or an addon that would disable auto grid subdivision when zooming in viewport?

Basically I just want the grid to always behave the same as it does in orhtographic view - stay to the specified scale, never subdivide on its own and ideally offer a couple of hotkeys to alter the grid scale quickly.

I found the "Minimum Grid Spacing" parameter in the options, but it seems to have no effect no matter how high or low I set it.
Subdivisions option in the Display rollout controls how the grid subdivides while zooming in the preset orthographic view:


  Subdivisions
   Controls the number of sub-lines that appear in each cell of the grid. In aligned orthographic views the level of subdivision depends on the zoom.


To stop the grid from subdividing at all set amount of subdivisions to 1. You might want to adjust Scale option to make the grid less big:



Note that this won't work in any other unit system except for the None which is by default, because both Metric and Imperial already have predefined spacing between grid cells so they aren't adjustable.