This comes up every decade so I’ll post it again, it would be GREAT to have a dynamic grid that follows the planar views and scales as we zoom out. With an indicator that shows the size of x units. 5 might be best? VisualArq’s works great, so something like that should imo be standard in Rhino as it would benefit all.
I recall @david made a small proof of concept for a grid that followed the camera this some 10 years ago. Isn’t that right?