Often, when I got to a review request with an ongoing discussion, I'd like to add a comment myself. But right now, I always have to scroll to the bottom, jumping over all files, thus loosing context to the other comments. See e.g.:

• https://phabricator.kde.org/D3597
• go to the last comment
• now reply (there is no such action, but there's quote and you can remove the quoted text - another usability issue)
• you jump to the end of the page, and cannot see the other comments anymore, only the quoted text at most