The biggest issue with the #threadiverse - findability. The second biggest issue is #federation issues.
Still early days, I get it - but using search engines outside of your home instance (e.g., https://sub.rehab/ or https://browse.feddit.de/ ) to find magazines is bad enough, but then for an instance to not federate with the one that a magazine is hosted on is another.
I'm also of the mind that the aforementioned instances should be removed from searches for breaking federation.