As I pay attention to narration, I also try to include areas where Game Artists can add personnality to levels, for a special framing, a story element, or anything that might add to the level.
The way a person occupies space and the psychology behind it is a fascinating thing that can bring a lot to a level design.
I like studying a player's behaviour to make better levels.
Open-world or 2D platformer, the player needs to be guided towards a golden path. But that doesn't make it the only path. Subsidiary options give depth to the player's experience.