The comments feature is somewhat confusing. It seems like i'm forced into "add comments mode" when all i'd like to do is to toggle the comments on or off while i'm designing, but then if I view comments I can't do anything else because it totally switches the experience. I think it would be helpful to separate these so that I can view all the comments at once without assuming I want to be in 'add comment' mode. The way I use comments is more to leave notes for other people rather than to specifically try to comment on what someone else did, so maybe it's just a different feature to allowing someone to see all of my notes.