Group policies are a wonderful thing. It turned out messing with registry I did wasn't even needed, everything was in there. I had to mess with them once in Windows 7 as well. They're a bit of an obscure feature, but they work really well.
Really, my biggest gripe about Windows 10 (and 8) is the aesthetics. This "minimalist" design looks like crap, IMO. Aren't no settings to help with that. The start menu is good, but still a far cry from what it used to be in 7. Aesthetics also took a plunge, XP looked nice, 7 could be used to and 8 looked ugly. 10 is only marginally better, with oversized icons and tablet-style "tiles". I'll still stick to it for performance (which is a marked improvement over 7) and DX12, but I hope a way will come up to deal with the fact the OS is just plain ugly-looking.
Similarly, I find Chromium-based browsers ugly as sin. I loathe how every browser, including the once-great Opera, looks like Chrome. They're all ugly and, to some degree, lack important features. Had to install Opera 12 just to get everything I want (paired it up with a slightly paranoid security suite). Even Vivaldi doesn't implement everything, not to mention I found it downright hideous. Why can't things keep looking good like they used to?