It would be useful to have an export of the full roadmap for offline use, whether it's printed on paper, or simply as a file on a local machine. This would enable us to share the roadmap with people across the organization or in presentations, regardless of whether or not they're Aha users.
This is possible today. On the releases roadmap page (or any page), you can adjust the timeline to show the full time period that you are hoping to view.
Then click the Add to Notebook button and select the Save as Image or Save as PDF options. This would allow you to view the entire roadmap in a offline manner.