Upgrade deb repos to v3 onions
As read in my sources.list, it seems Tails still uses v2 onion services to serve the Debian repos. It sure would be nice to upgrade to v3 onions for better security. I couldn't find a related issue so here's one.
Also, have you considered running the Tails repos as single onion services ? Skipping the onion routing on the server side would make more bandwidth available. I feel like the repos were super slow from over here, but maybe it's just my connection? https://blog.torproject.org/whats-new-tor-0298