SI units for the graphing backgrounds seems like a no brainer. 1 mm, 2,5 mm, 5 mm and 1 cm squares please?
The latest update of Squid for Android now has 1 mm, 5 mm, and 1 cm graph paper!
Barry Staes commented
This (5mm squares) was the first Papyrus setting i tried to change, frantically searched all setting screens because couldnt believe this was not an option. A fustrating first-experience.
It would be nice to have other backgrounds for metric system. Eg in Germany we normaly have boxes with side-length of 5mm or 4mm.