Okay so if you saw that reveal thing that MS thought was good, and paid attention you would have noticed this, there are a few features that GNOME has had for ages which are just cropping into Windows.
Multi-desktops
This has been in Linux and most DEs for ages now, MS is starting to roll these out, I believe OSX has even had them, although I am unsure.
The fact Windows is getting to the point with their crapware that they need mutli desktops is stupid, although Linux has them, we can better manage these desktop with one for terminals, one for web etc etc, now this will also similarly apply to Windows, it seems to me more of a way to have a spotlight for Metro apps, which are awful.
The GNOME window viewer.
Okay so in GNOME when you go to the top left of your screen, you can get the multi view section, which shows all active programs on that desktop instance, MS has begun to implement this, and more than likely market it as new in the future, this is a replacement of aero, while I hope alt-tab is still there for the standard user, this is again targeted at touch screen, same as multi-desktops will be, while sometimes easier people who know how to control alt-tab or aero propperly will surely not appreciate this feature.
Start menu is back...
While I like a start menu, I have been spoilt by the likes of XFCE and GNOME, for me its better in terms of getting things done, I love OSX layout, which gnome/xfce provide, I find it faster and smoother.
Now for my girlfriend this would be a major adjustment, she has gotten used to Metro, although she can use Start bar, she does not miss it, as for her dad, he would love the start bar, so its good its back, but for me, no thanks!
It seems to be more Windows Phone 8.1 than Windows Desktop.
Web search from start.
Ubuntu's Unity has had this for ages, via amazon, which I can see MS going down, more money in their pockets.
Snap
All they did was add more snapping windows, nothing major, and Linux has had this for ages.
So while I will be VMing the tech preview, I don't think I will be leaving Linux for it, may have it on a spare HDD sometime, but the fact that I can do everything on Linux I want, and its faster and more stable, and I am not bombarded by updates everytime I start up, Linux will be my home for a good long while :)
Also seriously MS, what is with your teams fashion choices, I would think modern would be more minimal styles, not long hair styles... IMO.