How are other Gemini users allocating work items to intra-release sprints in an Agile/Scrum workflow? We could create a new "version" for each sprint, but the version dropdown box is already stuffed with so many versions, so I'm loath to add 3-5 more versions per release.

What are the pros/cons of using a version field vs. using a different field or custom field to track sprints?

Is there another field that is frequently re-purposed to track sprints?