Be honest, will Sun & Moon surpass Platinum in terms of difficulty as far as Nuzlocking is concerned?
I think it has a chance.

I imagine totem battles could provide a fair bit of challenge if they're done right.
For example, Wishiwashi's school form has already been shown to be scary strong. The water totem battle seems to be a Wishiwashi in the rain, probably with other pokemon helping it too.

I dunno about you, but that sounds like it has the potential to wipe out a few of your pokemon if you're not prepared.

Ultra beasts also will hopefully be strong as fuck.

Anybody here planning on doing a blind nuzlocke run for their first playthrough of the game?