Eshu is mostly a project I am intending to start with somebody else taking it over in the future.
I don't really have the time, but willing to get it started.
It is named after Eshu, the Yoruban trickster who kills elephants. That should give an idea about a conceptual feature roadmap.
We are going to write it in Go, it is going to be ActivityPub-first; we may add support for OStatus later.
Key planned features include policy-defined message filtering using SAT-solving, split timelines based on rules, pattern banlists, keyword mutes and basic Mastodon API compatibility.
NO, IT WILL NOT FEATURE ACTIVITYPUB READ RECEIPTS, I WAS KIDDING ABOUT THAT