It would be useful if the Story Map had a feature which allowed me to hide a release (swim-lane, section).

In story mapping, releases are time-related entities. Once a release is … released, the focus moves to stories in the next release and the old one is no longer important to see.

It would be cool if a release had in its toolbar a toggle “Done” or similar. If checked (toggled), the release content would be hidden, and only the release name would be visible.