Well, Rust is great and everything... but calling DuckDB "the previous generation of data engineering" seems a bit funny. And if anything, DuckDB will probably have more impact than all the other mentioned tools (or maybe it even already has).
I've built a similar board some time ago, focus was also mostly amateur level. It does include some of the mentioned features, i.e. it has a timeline to save different formations and graph connections (they don't move together though).
It's probably a bit outdated by now (haven't used it in a while), but maybe some of the ideas are useful for your app.
But curating such a list of experts to follow takes quite some effort. It would be great to have a tool that helps with that.
And sure, ideally you wouldn't need such a list of trusted experts but just focus on content. There even was a time when this worked - you could just type "what is the best database to use" into a search engine, and get a helpful result. Not anymore. On HN it may still be better than elsewhere, but ultimately it's a similar issue.