Hello,

I would suggest updating the default font (OpenSans) to this one https://github.com/hikikomori82/osifont
It is specialized to CAD drawing with IS0 3098 compliance.
Specifically osifont.ttf osifont-italic.ttf

In some European countries, CAD projects must have font which conform to IS0 3098 specification.
Font is available under GNU GPL licence version 3 with GPL font exception.

Default OpenSans.ttf font location is in the Moi>ui>font, one can replace it with attached file (includes license formatted as original). Just delete the contents of font folder in Moi.