I'd love an option to disable dreams. Or for ambience/sandbox mode at least.
But I understand if they are part of the intended experience of the game.
I exclusively play ambience mode and a few of them really spooks me. Now I just watch out while sleeping with my finger on the "reset position" key. Found a person on reddit that said they have a friend with thalassophobia and the rising water event made them unable to play the game. When someone commented such a toggle would broaden the audience, and I tend to agree. And there's no risk of watering down the game if this option is locked out for story mode.