When you view a project index page, you see "Related Projects," "Project Profiles," "Collaborators," and "Followers" over on the right. If you want to expand ("view all") profiles, collaborators, or followers, you get taken to a separate page that cleanly lists all items.
If you want to view all related projects, however, it expands on the index page itself. For umbrella projects with many related projects (example: http://www.geni.com/projects/Cemeteries-Memorials-Graveyards-Portal/29385), this results in a huge list on the index.
It would be much easier and cleaner to see it on a separate page, and would also help to avoid browser quirks. It would have the advantage of being directly linkable. Plus, consistency is a good thing. We do it for the other three boxes, so let's do it for this one.