Many of our projects have huge backlogs with more than 100 issues. It gets very difficult to see and prioritize these when Sprint planning.
We've tried a workaround by creating a sprint (we have parallel sprints enabled), "Top Backlog" but it's not an ideal solution - the "sprint" was accidentally closed and all the issues went into the backlog.
It would be great to have two real, separate Backlogs that we could re-title so as to separate out issues.