Windows 10 has a ton of neat shortcuts for pro users that Windows 7 users miss out on (besides all the security and performance improvements). The right-click menu on the Start button alone is life-changing. (It was introduced in Windows 8.) Over the last few years, Windows 10 has seen much overdue updates to Command Prompt, Notepad, etc. The default Calculator app is now pretty awesome even.
Let's see, other Windows 8/10 UI blessings I'd point out is revamped Wi-Fi connection management in the system tray, the quick notification tray access to switching secondary monitors between extend and duplicate modes, easy access to airplane mode, proper official UI for Bluetooth devices and cellular cards. Don't forget having a proper notification tray to begin with, so that fifty dozen system tray icons aren't each presenting their own popup bubbles.
While the start screen and charms bar were definitely missteps in Windows 8, I would cautiously be willing to almost entertain the claim that Windows 8 had a better UI than 7, just due to all the handy shortcuts they added. But 10 definitely brought back some of the strengths of the 7 UI, while keeping all of the improvements that 8 launched.
I strongly suggest you compare the two. It's not even remotely the same thing. On Windows 7, right-click on start offers two options: "Properties" and "Open Windows Explorer". On the current version of Windows 10, it has eighteen options, including handy options to launch PowerShell with or without admin rights, access admin tools like Event Viewer and Device Manager, etc.
Meh, I suppose that's somewhat convenient. Those have been available on the Start Menu however if you clicked a radio button in its preferences and enabled Admin tools. You can also right click the MyComputer and pick manage.
I don't use those so often that I need a dozen shortcuts.
