I teach, so your curriculum is supplementary. I can't assign everything you have. So I select assignments. Not all assignments are required, some are supplementary as an aid, like videos. I assign videos so students don't have to search, which they are not very good at doing yet.
However, when I look at Scores, the page is cluttered with optional assignments beside required assignments.
And there are too few results on a single page too. It's cumbersome to click next to see more assignments, something that would not be necessary if we could divide assignments into Optional and Required.