I don't think this is a problem right now. I'm in favour of deferring any decision.
Right now, getting more magazines opened is more important than who mods them. Without content, there's no users, and without users, there's no content. If someone wants to create a dozen magazines and get the conversations kick-started, that's a good thing.
If moderation on a new magazine is shit, people will move to a new one. The same thing happened at Reddit. r/gaming was too memy, so people made r/games. You had two large subs in r/relationships and r/relationship_advice.
The only issue in my mind has to do with continuity planning. What do we do in a few months when a hundred magazines have AWOL moderation? Who decides?