It's probably better to have a special relay or a special subdomain just for the relay that archives stuff though. And then clients should know to use that when they want old stuff.
Discussion
Yeah, I wanted to set up the archive, but I need someone more familiar with relays and archiving to do it, as that isn't really our area of expertise. And blows up our meagre budget. 😬
Would be good to have at least one public archive relay, in addition to the couple of public "other stuff" relays we now have.