I have a suggestion about the Snap theme's handling of the Assignment activity, in particular the way it currently puts the "Additional Files" feature under "Common module settings". Can we move the "Additional Files" feature out of "Common module settings" and just place it beneath the Description field?
In core Moodle the "Additional Files" functionality is under "General" so it is always shown together with the Atto editor where the instructor is expected to enter the Description, see https://docs.moodle.org/39/en/Assignment_settings, so anyone looking up the core Moodle documentation expects this feature to be with the Description field.
The Moodle docs page on Common Module Settings https://docs.moodle.org/39/en/Common_module_settings also does not talk about "Additional Files".