Before the release of the new UI, Bitbucket provided the exact commands for cloning repositories.
E.g, hg clone https://firstname.lastname@example.org/rnowling/corr-ga
The new Bitbucket UI only provides the URIs (https://email@example.com/rnowling/corr-ga) .
Although this seems like a small thing, it was a key feature that led me to prefer Bitbucket over Github. Not only did it make my life easier (less thinking!), it was useful for members of our team and collaborators (researchers, scientists in math, biology, etc.) who are not as comfortable with the command-line and tools like hg and git.
Please, please bring this back!