Seeing two major issues almost all shared by the three responsive themes I'm testing, esstential, shoelace and clean:
- the themes either make no provision to present gradebook pages without blocks in order to optimize real estate (absolutely imperative in Categories and items, and Grader) or they don't fill the empty space once the blocks have been removed.
- They do not handle coloring correctly in Categories and items making it very difficult to determine what items and subcategories belong to categories. This can be tested out by having multiple categories with nested subcategories (common scenario).
Bootstrapbase has a page format called print that uses no blocks. Shoelace implements this and it seems to work for the one place its used in Moodle -- Glossary printing. This is the kind of display we need for all gradebook pages unless we can dock blocks.