From the useful-but-not-all-that-logical school.
It'd be nice to easily log work for a sub-task from the parent issue. One idea may be
- to allow the % + graph section to be clickable (or parts of it), if you have permission to log work.
- Clicking it will take you to the log work screen of the sub task
- Redirects to the parent page when you're done
One random note also is that it'd be nice if the issue summary is displayed in the title / HTML window title on the "Log Work" screen (you have the issue key but no summary to remind your gold fish memory what the issue is)