Let add setting to switch gridlines on/off
Now we can do that for current worksheet only. These days it's quite desirable to have an option to keep greedlines off on permanent basis for each new workbook. That could be done using template or by changing/adding registry key https://www.quora.com/What-are-some-ways-of-removing-gridlines-in-Excel-2007.
That will be much more suitable if we have such option in Advanced section of Options.
Oz du Soleil commented
YES! Default gridlines to off should be an option.