1) 2) - there is a kms emulator, which in theory will not fall off. Is set as local service, and the Windows to it knocking over a network for activation.
3) 7-ka - the successor to XP relevance.
6) 7, 10 (here in two ways).
9) Some drivers from Vista would get up at 7 and worked successfully. May be on the top 10 stand.
10) Esessno. First Preinstallation environment (runtime installer), which will exist as long as windows exist in principle. The second part of the official Toolkit MSDaRT
14) anything can Happen. 7-ke, esessno, we need a new driver. 10ke (maybe 8ке?) probably won't need.
16) Win10 comes as a service. To choose what to install in principle impossible.
17) to Update win8 to win8.1, for 7/10 are out of date (though there are differences, in comparison with XP).
18) There is a desktop app, and have UWP
23) All the same as in xp. + have a Recovery Mode (a separate mode with the original disk is put together with the system available when booting from the distribution, often to cope with problems starting (broken filesystem, broken loader, etc.), without the direct involvement (except for the fact launch, and if installed locally, if the boot loader recognized an incorrect shutdown of the system, - start volunteer force (win7): 30 seconds of countdown to launch, with the ability to return to normal boot or go into safe mode or force (win10, maybe win8?)).
25) In the x86 versions (not sure win10) is scanty emulation of dos, as in xp. In x64, not in principle, because the processor cannot fail x64 in v8086. Costs dosbox.
But it would be cool if you just write, what do you think has changed since the days of Windows XP for system administrator who need to support computers small businesses and to do emergency computer help.
Overall, 7ka (and beyond) is much more tenacious, even with rough handling. UAC
is a useful thing. It is advisable to explain to the user that this window is popping up for a reason. And, in principle, try to avoid uchetok admin without a password. In General, is fundamentally nothing new/revolutionary, not invented, but the old places pulled.