This I applaud as the tech in me. It will quickly become a mess in the real world. People will run pods on cheapest VPS and they will get hacked, run out of money, get bored, go broke etc. Imagine as fractions of content goes missing for a while or is just deleted. One guy runs a small pod with some people, kills it, 60.000 messages gone. How does that impact interconnected discussions? If I own my own data. (good),…
Various organizations provide "archive" services. Relays and/or AppViews can utilize (or be) such a service. Removal from such a service depends on that service's systems (and possibly the legal context.)