So as I've been GMing it has come to my attention that sometimes you need help. While I know you can GM somebody, I think that sometimes you don't want to give them that much power. Maybe you don't want them to accidentally see hidden notes, hidden characters/enemies, or hidden maps. One of the best examples I have is if a player needs to keep being made GM to alter a rolltable for wild mage. As of right now, only GMs can make rolltables from my understanding. Anyway, my suggestion is being able to give someone a position above player but below GM, where you can choose what features they have access to, and what features they don't, instead of having to give them complete GM privilages. This would also allow someone to help with maps without seeing GM hidden notes and tokens or stuff like that.