Sharing PDF for Comments needs more features such as bookmarks
I am testing Acrobat DC for sharing PDFs for commenting. The commenting part works OK but the full palette of comment tools such as textbox, draw rectangle, arrows, etc would be useful. Also bookmarks created before sharing are visable in the shared document but any bookmarks that are created afterwards by any party disappear. Due to these shortfalls I will not be upgrading to DC, Acrobat Pro 2017 is working just fine.