We've been using Bitbucket for our company lately and just started using the issue tracker.
We've come across a missing feature (at least, we haven't found it yet) which we think would be valuable:
Is there a place where all open issues across repositories can be viewed? Either assigned to the logged in user of unassigned issues.
Right now you can only see issues when you go to a repository. But wouldn't it be easier if there would be a section on the dashboard that shows all issues assigned to you ordered by priority?