Regarding Wordpress, I've found it still lacks a decent search plugin. Could you make one? Charge for it, accept outside pings, take in full feeds and provide a search box in return for subsequent display on individual sites.

Also, pitch your aggregator as well as something that'll "pull in more engaged readers into your site." Perhaps the search box could be "search this site only" / "search all engineered blogs."

You could also make the plugin free, but charge for accepting more than 10(?) pings per month. If you create a specialized LLM, you could also offer some type of shared ownership too to encourage cooperation.

Crowdsourcing content is another interesting area to watch where writers propose an article and it gets funded beforehand. Those articles could end up being open-source ideas with actionable information. Having built up a reputation and readership would make successful crowdfunding more likely.