colour pages in a section
The ability to colour / box / somehow differentiate pages in a section to make it easier for the kids to see.
Jed Gibson commented
And make it easier for the adults to see also.....
This would make it easier for my students to know what pages are incomplete, rather than me having to indent them under pages called marked, overdue, current. Instead I could just change the text and have a colour code system, green, red and yellow.