Windows 8 (I have tried 2 previews and one leaked version) has many features to commend it - and some to condemn it - In my favoured order :-
Windows To Go - the ability to have a full Windows 8 installation on a USB device that will run on any PC that can boot from USB (snd a few that don't using a boot enhancer like Plop Boot Manager).
Improved networking over Windows 7 - It is just always there and immediately working without any attention or tweaking.
Windows Explorer Search Tools - these return the power, missing in Windows 7, but available in XP Windows Search to a ribbon in the explorer Window, so you can search for files with extensions .odt, between 4 and 5 MB in size, modified between two dates containing the text "wubble" in a set of drives or folders.
The ability to natively mount .iso and .vhd images.
Speed of startup even when not enhanced using the fast startup hibernate feature
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Less favourable features mostly involve removal of choices available before :-
the Start Menu Orb replaced with nothing, and the Start Menu itself with Metro tiles.
Reported removal of Aero transparency effects.
Removal of the ability to play DVDs
Removal of Media Center.
Not many like the Charms Bar, or the "Hot corner" method of reaching parts of the system.
There are also many little "tweaks" that follow the time old Microsoft tradition of hiding features behind different menus than the ones that gave access to the features before.
"Add features" is a new name for "Anytime Upgrades" but it does not appear under Features and Programs. It also, so far, just presents a dialog which asks for your product key, without any explanation.
Logon with your Windows Live ID is a pain when you have a network login that is not your Windows Live ID.
Turning off UAC renders the Metro Apps unworkable. So you can either be in full control of your personal computer, but not have access to your apps, or you have your Apps, but put up with the UAC reminders in the desktop when you want to do something vaguely system-threatening.
A minimum 1024x768 resolution renders Metro Apps unusable on Netbools with smaller screen resolutions.
Comparing Windows 8 to ME is partly wrong, and partly right - So far Windows 8 is still Beta software - like any Microsoft OS, Beta testing will be ended with the first Service Pack - so it has many bugs to resolve - as did ME at first. Windows 8 is, like ME, considerably cut down from it's previous version - intended to speed everything up, but it also has the inevitable slew of bloated fail-safe resources to call on when trouble strikes. Unlike ME, there is a lot of innovation in Windows 8, and it will take a while to get it all working together properly.
Windows 8 had got me to examine my way of working with Windows, and improve how I use the desktop - I've concentrated on using the desktop and taskbar better than before, and ignored Metro for the most part. When there is a raft* of new Metro Apps available I shall start using Metro, at the moment it has nothing to interest me.
By the way - it is interesting that Tek-Tips has updated the "Reply to this Thread" buttons to have more of an "XP Luna look and feel" than the previous version! About 2022, we may get the Metro Look for Tek-Tips
*note my careful use of words