On many of the roadmaps and reports, it is not possible to choose the sorting method. It seems that Sorting by Date is forced by Release Roadmaps, and Sorting by Name in Custom Roadmap reports.
It would be really nice if you could choose how you would like to sort a report. "Sort by Release Date", "Sort by product name", "Sort by custom field".
If this could be implemented in the same method as the List Report Sorting, that would be great.
Today we have delivered powerful new sorting capabilities for pivot tables, charts, and custom roadmaps. You can now build the perfect report and organize the view exactly how you need it. Check out the blog post for more details.
This is a feature I would like to request too. A releases roadmap ordered by dates doesn't give me the by product view I want and makes it very hard to read when I have 13 products all with multiple releases. I have to create 13 views and a portfolio view to create the story i need to be able to tell.