Here in my team, we have several sprints going on at the same time for the same project, due to competing delivery dates; to work around this limitation, we need to move our stories all the time from any sprint to the active sprint to be able to relate the commit with a story in the modeler. At the end we have the active sprint with a ton of stories that do not belong there (as we want to have one sprint per product, not per project) and the reporting of stories per product is error prone and not accurate.
We need to be able to see stories from any non-completed Sprint we choose in the modeler, with a flow like:
1. Choose the Sprint
2. Choose the story
3. Commit related to a story
This also could be configurable, like if you want to have one sprint active per project or several.
We REALLY need this!