For the noise reduction charm, I always imagine Corvo gently cutting the glass with a glass-cutter to make a hole to shim through. I know that's it not logical at all, but when I watched the video I found myself surprised this wasn't the case. And why would I have any other expectation. It's silly.
I like the idea of opening a window part-way, but without tweaking the associating sound and how it propagates, there wouldn't be a point and then it would fall apart. If you read the Sneaky Basterds articles, you'll see that it took them a long time to adjust the feedbacks that are delivered to arrive at how much sound Corvo puts out and can be heard, and why they made those decisions. It sounded to me like the best decisions were made in this department. I liked the idea of some of the more complex propositions they had, but they were scrapped for being too fussy or rather too sensitive.
I think this should still satisfy sneaks everywhere, of which I count myself as one and looking forward to playing that way first
