An overview of what's happening in a project is needed, for instance to quickly give an always-up-to-date overview of what a team is doing. Said overview would then be linked, or ideally transcluded, in the team's or project's (e.g. extension's) page on mediawiki.org.
Example of views used with mingle are sprint status and sprint backlog:
https://wikimedia.mingle.thoughtworks.com/projects/language_engineering/cards?favorite_id=175&view=Sprint+Status+by+Owner
https://wikimedia.mingle.thoughtworks.com/projects/language_engineering/cards/grid?color_by=priority&filters[]=[Type][is][Story]&filters[]=[Sprint][is][%28Current+Sprint%29]&group_by[lane]=status&lanes=Ready+for+Analysis%2CIn+Analysis%2CReady+for+Development%2CIn+Development%2CReady+for+Testing%2CIn+Testing%2CReady+for+Signoff%2CAccepted&tab=Sprint+Backlog