I think Evince should have at least "freehand line", "underline" and "typewriter textbox annotation" tools
I think they are really basic tools that a PDF viewer should have for basic annotations for homework/study.
Freehand line can be useful to draw little and fast things. Underline is very important for study. Typewriter annotation is THE MOST important for me: the Evince's note text is not very ergonomic compared to the classic text box typewriter.