Is there a way to enable a Moderator with superpower of editing all the sections, ban users, find user for ip address, see user ip, change user's signature, change user's avatar. A sort of Sub-Admin user (or if you prefer a Super-Mod:)

I understand the potential risk. Maybe for an old forum migrating to NodeBB can be useful to merge some account from the admin panel in the case one want to login using social where they use a different email.

Out of curiosity, why don't you use Redis? the new redis cluster feature let you shard data to multiple servers.

I've seen some demand for this as of late. It would be a pretty massive overhaul so I can't promise you a definite timeline on this as we have a ton of other things to get out for 0.5x next month, but will keep it in mind in future