Hi Paul!
As a disclaimer I work for minware, a company that develops Agile Intelligence tools, and this is something we handle using our Azure integration. However, there is a native solution that can solve for half of it. For more information about the Epic Roadmap on Azure you can visit Microsoft's guide here. Unfortunately, I'm unaware of another native option.
That being said our plug and play dashboard combines version control, ticketing, and calendar data to automate reporting. We've just launched a new predictive roadmap, in addition to our sprint insights reports so that we can help dive into dependencies and build predictability into the teams we work with.
Our roadmap can be broken down by epic, or task assignee, and you can expand each to view the progress of stories or tasks. We also automatically provide visibility into dependencies and weigh weekends to help make it as reliable as possible.
If you are interested in more detailed reporting please let me know, and I will be happy to help!