Track issues, discuss the shape
Keep issue-level work in Jira and represent meaningful project scopes in Hillchart to make their uncertainty and execution state visible.
Avoid a false roll-up percentage
A set of closed issues does not always show whether the central unknown is resolved. The hill gives the team another progress signal.
Share the project story
Use snapshots and view-only links to explain the state of the project to people who do not need Jira access.