@debounced have you considered having an admin account separate from your daily driver so you can keep your autosubscribes in place, for the good of the horde?
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I have, but I'm leaning more towards submitting a code change to Mbin's default behavior so that any new mags searched make the instigator the default subscriber and they can choose to unsubscribe if they wish.
I don't see a reason to load down the instance if someone doesn't think it's important enough to stay subscribed and I don't allow logged out users to search for any new federated content as it is, so this "enhancement" can be an extension of that. At least this is where my head is at in how to manage user experience (junk polluting /all) vs. space & horse power requirements.
@debounced that sounds like a good solution.