I think Lemmy/Mbin would benefit from ‘moderation pools’. The basic idea is that, if you subscribe to or join a moderation pool, your instance will automatically copy any moderation action taken on content your instance also hosts. This would allow multiple single-admin instances to moderate even during off-hours of any single admin.
Lemmy.world is the most mainstream instance. You may find small instances that have more political center types, but for all the “issue” is that the fediverse is federated. So lemmy.ml users can comment on your post on lemmy.world as well.