I'm gonna dig out my old semi-finished spec for an AP alternative. I started it a couple years ago as a portfolio piece before depression hit (and getting mocked for writing it in Python and PHP instead of Rust and Go like the big boys), but I have a sudden urge to finish it
I already have test implementations for full account migration, "lifeboats" for when an instance needs to unexpectedly shut down (so folks can just carry on using it without losing anything on the instance they designated as second choice), and encryption between instances (as well as an E2E DM implementation I'm pretty sure I need to re-work)
