Wikinews is currently having major issues, like insufficient participation and aging software infrastructure. Revitalizing Wikinews is discussed at https://en.wikinews.org/wiki/Wikinews:Water_cooler/miscellaneous#How_else_to...
Also, Wikibooks has a huge backlog of changes pending approval by administrator or reviewers: https://en.wikibooks.org/wiki/Wikibooks:Reading_room/Administrative_Assistan...