It would be nice to have a keyboard shortcut to show/hide visual filters. Sometimes I want to show/hide back and forth as I'm reading. Sometimes the filters are helpful and sometimes I just want the plain text. So I toggle between the showing/hiding as I'm reading depending on how helpful or distracting it is.
Another possible option is if the drop down for "Select all, Unselect All, Expand All, Collapse All", included an option to "pin to navigation bar" for that resource. That would enable a quick toggle at the top of the resource next to the "Parallel Book Sets".
This might be a niche use case, but it's one that's very helpful in my daily use of the program.