Inspired by T213880: Cleaning up #Mediawiki-extensions-other
Where it makes sense to do so, new component projects should be created for tasks that otherwise just sit in MediaWiki-General but are clearly tied to a specific feature / component
Recently created projects for core components:
MediaWiki-Parser-TrackingCategories (converted from tracking task)
MediaWiki-Page-rename
MediaWiki-MergeHistory
MediaWiki-Core-Hooks