The return of lets play in the dark, to play Alien: Isolation, would be VERY welcome!
The current playlist I'm thinking of is Spec Ops: The Line (by group demand), Alien: Isolation, and Whistleblower. This is only a tentative list.
Spec Ops: The Line isn't really a scary game in the same sense that Outlast and Alien: Isolation are scary games. It's more of a deconstruction of what it is to be the super-badass action protagonist, killing people and slowly dehumanizing yourself and your enemies. If you do decide to play it, I'd say it would be more interesting as a commentated let's play with more than one person commentating.