“How to make the grid bigger?” is a question I get often from my students. It would be helpful if the grid was always just big enough to cover what you have in the scene, or at least that there was an friendlier UI for expanding or contracting the grid, that doesn’t involve diving into the document settings.
Of course there are times where an auto adjusting grid would be counter productive, for example when having a big reference scene or ground plane, so it should be a smart tool. Also nice would be to have grids that have a different line count in X and Y, for example when parts are much longer than wide.