You can't imagine how happy I was to hear what the Infinite Archive would be. I love this sort of thing! When I'm not playing ESO, I'm playing roguelikes or roguelites.
As it is implemented, I both love it and hate it. Unfortunately, I never play it even though I consider it every day. I'd love to play it, I just can't.
It just takes too long, and the fact that I can't save my progress makes me not even want to start. I love the gameplay, but the fact that I can't even take a long bathroom break without being kicked out makes it so that it feels like it's never the right time to play.
I get it, you guys wanted it to feel like a marathon. I'm sure there's playerbase for that, but I think a better way to handle this would be to give these players a leaderboard with rewards and real bragging rights and rewards (title, mount, housing, whatever).
I wish we were allowed to save our progress, even if it means being stricken from the leaderboard. I honestly don't care about my bragging rights, I just want to play something that is superfun.