I'm really turned off by the disparity in how much attention narrative experiences demand versus how much the actually use. It'd be cool if someone was screaming story at you while you were actually engaged with something 
>https://www.youtube.com/watch?v=3wrjnMiBb0k
Valve storytelling seems to be Travel/Lecture/Travel/Setpiece. you might get a lecture during travel, if there's nothing going on, or it may go right from Lecture to Setpiece, for a change of pace. The target audience seems to be people who can't chew gum and walk at the same time.