This feature request grew out of a discussion on the Makergear user group forum.
How about making the space between the grid lines user definable? As it is on the M2 we get a 14x14 grid on an 200x250 mm bed. Not very useful no matter how you slice it (haha). If the grid has to be a fixed amount, then the idea was to make it 1cm squares on a metric system and 1/2" squares in English units.
But even better is make it user settable.