I understand how it works from the technology perspective, but it should not be that difficult to mask the reviewer's name AND allow annotations. As an ESL instructor, peer reviews are basically useless if all they write is 1-2 sentences of global advice. And even if the students can't, I should be able to annotate!
At the very least, when "anonymous peer reviews" is checked, an alert to this effect should be displayed to the instructor. I've already told my students that their work and reviews will be anonymous, and now I will have to backtrack.
I don't have anonymous reviewer on, but my DocViewer tools aren't there. I want to comment on students' Word docs that are about 200 words long.