More grid lines on GC?

Continuing the discussion from Save Project Layouts - Save Scrap:

The thread on positioning for open scrap board spaces has been inactive for awhile, but I have a similar question. How about adding 6" grid lines on the GC screen and then I can get closer to where my open spaces are on a scrap sheet. Unless there is a GC setting that I’m missing and can’t find to actually add more than the two grid lines that I see on GC ver 1.06 today.