WMF Engineering's weekly dependency management meeting ('scrum of scrums') currently uses a matrix view in Mingle to at-a-glance see dependencies (and their related statuses) between engineering teams.
In order to to start using Phabricator for scrum of scrums instead, we would need to be able to replicate this kind of view - or an acceptable alternative that would achieve the same goal of at-a-glance view of dependencies between teams and their statuses.