It is very tedious to go through all the steps over and over in every Google Sheet to change the default font away from Arial to something that doesn't make my eyes bleed. Is there a way to automate this?
One possibility would be a way to add a menu item (written in Google script?) that does it for the current sheet.
Another possibility would be to somehow access a Google API to cycle through all of the sheets I own (or all the sheets I have edit rights to) and change the default font.