It'd be helpful if Differential provided a way to show the status of all opened issues for a revision in one place, like Review Board's Summary Table. This would allow the author of a revision to quickly see what issues they need to address, without having to search back through comment history or scroll through the change to find all of the inline comments.

(This feature might also require some way for reviewers to indicate when a comment represents an issue to be resolved, rather than just a note.)