Hey, you! What makes a good stealth game? (Patreon)

So, the next video I'm going to be working on is something I've been meaning to do for ages: "what makes a good stealth game?". What's so awesome about zipping across the rooftops in Dishonored, shooting out candles in Thief, storming bases in MGS V, and peeking under doors in Chaos Theory?

I've got plenty of ideas, but wanted to get your thoughts while I'm knee-deep in the research process!

I'm especially interested in unique solutions to stealth design. Two examples are ECHO (a game by ex-Hitman devs, where enemies learn from you and copy your actions, removing dominant strategies) and Untitled Goose Game (no fail states, "enemy" intentions are drawn as icons in thought bubbles).

If you've played something that's done something different in the world of stealth, I'd love to hear it.  

Cheers

Mark