This is something we are working on at Dept of the Environment and Energy - long term aim is to have everything digital first and PDF second - if PDF then that needs to have an Exec summary or abstract + any key findings, data (maps/graphs) as marked up content and interactive data that can be downloaded. All content needs to be tagged with appropriate metadata and taxonomies so it’s searchable and able to be aggregated.
As a department we produce a lot of reports so this is essential for us in terms of sharing, reuse and finadability of content.
I worked on the last State of the Environment report which was a 900+ page report for 2011 and, if we were to print it out, the 2016 report is equivalent of 3000+ pages. We developed a govCMS site to host both those reports and heavily relied on taxonomies and aggregation in the UX/IA.
Have a look at https://soe.environment.gov.au/
Let me know if you’d like to talk about it more.