I am currently using the 2020 version and i would like to have inches as the default unit. It is not available on this version. I had to contact customer support and they only way is keep documents in inches is when i open a new doc and each time i have to change the unit. There should be a way to have all my docs set up as inches under Units. So general and type in inches and stroke in points is what i would like to see.
The workaround for this bug is to change the units in the "New Document" dialogue, then go back and change the Preferences > Units > General to Inches, then it will "stick". I wish they would fix this already.