Is anyone actually running Windows 8 ...
" ... It's loads faster (on my relatively old laptop) - long time issues have been fixed for copying files etc and it's stable. The menu is quick ... "
[ Fast Boot ] ... It should load faster since by default it employs a hybrid sleep and not a full shutdown and is "resuming" rather than a full POST and bootstrap. Additionally, many people are obviously using newer UEFI streamlined systems rather than traditional BIOS. I guess comparing Apples and Oranges is back in vogue these days.
I have a theory that Metro and Windows 8 appeals to the definitive "serial-tasker", those that operate one task at a time like the instruction pointer in a CPU. They press the "On" button and wait. I say this because a "multi-tasker" would press the computer power button 30 seconds before he needs to jump in and do something. That means, press the button, grab a coffee ( or anything else ) instead of standing there waiting interminably. Multitaskers naturally know how to timeslice so that few seconds at startup never ranked high on the things-to-fix-in-Windows bullet-list when there are so many other real consequential annoyances to address.
[ File Copying ] ... What "copying files" issue might that be? Most people are referring to the yet again updated file copy dialogs, the ones that could have only been designed by a committee and were already getting ridiculous in Vista and 7, but now they have added an option to "pause" a copy. But for what possible reason? Well, I guess it makes sense since a serial-tasker might just need to pause. Multitaskers know enough that they can simply jumpt to something else if a copy takes too long. In truth, copying a file has worked reliably since 1995 for the consumers, but was made foolproof with NTFS based Windows even earlier.
[ Quick Menus ] ... GPU accelerated menus should be fast. Especially since it is essentially only rendering HTML+CSS basic geometry ( Playskool blocks ) in primary colors, kinda like simple webpages from 15 years ago. Were you expecting slow? I'm not impressed by Microsoft advancements here, nor should we be thanking them for these little baby steps forward. By now in 2013, instead of romper room shapes we should have game-engine style 3D user interface elements, like those which already perfected as far back as 1999 ( Q3 and Unreal ). And it should be fully user-customizable, not locked in to their one childish theme.