Got this up a couple hours ago, been playing around with it. So far, I definitely like it more than 8.1 and though in a very odd sense I'd say it's less simple than Windows 7 (in terms of easing you into the experience), it really is pretty intuitive. Looking around, it really does give the impression that Microsoft's trying to create an environment that can do pretty much everything someone would want without them having to download 3rd Party Software.
As for Microsoft Edge, I'm very impressed. It may be because after years and years of IE's status as being the worst "modern" browser, but this one really is fast. Would I make the switch from Chrome (or even Firefox) to it? Well...no. It's not so much because of the browser as it is the lack of plugins and 3rd Party Support (considering it's so new). That, and I've yet to really dig into it, just briefly doing some searches and like, but so far I like what I see.
As for Xbox...it's kind of surprising what this has become. If you have an Xbox One, it basically does all of the things that does (minus play Xbone games, but supposedly you can stream them and, from what I've seen, it's pretty smooth). Which means you can record videos and put them online, take screenshots...of pretty much any game. You can add games from your computer and run them through Xbox creating an overlay that can be quite convenient for makeshift recording software.
Only real beef I have so far, which really doesn't matter so much because basically no part of me was considering using the built-in video playback software (since I use MPC-HC + MadVR), but they say it can run mkv files and...well, when I tried with a few different files, after a long-ish load I only got sound. Other than that, Cortana...still undecided, I want to explore more of what she has to offer, but I'm not really sure how yet, and I'm still undecided on whether I'll upgrade my Gaming Windows 7 rig...though to get the most out of the gaming aspect of Windows I might need to.
