No one in industry, manufacturing, government, military, business, or the enterprise will care one whit about Windows 10 unless it’s a more productive operating system for the vast majority of their PC users. That really will be the sole metric of the success of Windows 10: is it compatible with the hundreds of millions of current PC applications and their users and is it substantially BETTER than Windows 7.
Very true, and XP works fine for many. W/10 is not an XP, and W/7 should serve the rest just fine. A area that Windows could much improve is in speech to text. Imagine a PC that would recognize your voice, awake from sleep, and does much better rightly recognizing your voice (speech training should use your own documents) and with which you could create custom commands (command: PC sleep;go to... etc.) as easily as you can with shortcut keys. And comes with a real mic to do it. I think that would sell an upgrade, but i left it out of my list.
Dragon (besides my hating the name) basically has a monopoly for PC users and thus only makes small improvements for which the want $100+ more for, and still is very immature.