Wikidata is a resource that can be used for the WikiProject Directory:

For inclusion in the directory:

Anything that is an instance of WikiProject that also has a sitelink on the English Wikipedia should be included in the directory. This will overlap quite considerably with the current criteria we use, but that is okay, since we may pick up other WikiProjects or task forces this way.

Task forces should be listed alongside the main WikiProjects, possibly in addition to having standalone entries. A sane way to do this should be developed by @Isarra.

For exclusion from the directory:

Anything that is an instance of Wikimedia disambiguation page should be excluded from the directory, since they are disambiguation pages and not proper WikiProjects. See for example https://en.wikipedia.org/wiki/Wikipedia:WikiProject_Georgia (country vs. U.S. state) and https://en.wikipedia.org/wiki/Wikipedia:WikiProject_Congo (projects for the two different countries).