Wiktionary is useful; perhaps you're referring to my comments, which were not about Wiktionary at all. Wikiquote definitely does not belong as a sister project. Maybe it is a "shining beacon" in the cesspool of internet quote sites; well, there are lots of things the rest of the Internet does poorly, that doesn't mean it's automatically the WMF's job to create a project to do it better.
I think it is our mission to publish reference works. That is what we do.
Reference works include Encyclopedias, dictionaries, collections of quotations, of images, and of texts.
Wikinews is not a reference work, although it has archives.
We could do a news aggregator which would be a reference work of a sort. It would be a record of what was in the news that day. It might be useful provided it was not full of dead links.
Fred