- I can't run multiple instances of visual studio...
- IE in Metro doesn't share cookies/settings with IE in desktop mode...
- Closing apps is awkward... Drag them downwards (WTF) or use ALT+F4 (no, leaving the open in the background is not an option, it will clutter my alt+tab menu).
- Start menu gone, wtf? Yes I do use it, and yes I do still click on it with my mouse to find certain things. The new search is worse... If I want 'windows update' I first have to click where I want to search for 'windows update' (and if I can't remember the name of what I'm looking for, this doesn't even work).
- I want to leave windows partially open (not fullscreen) so I can see other things on my screen (download progress, file copy progress, etc.). Again: not possible in metro.
- I can't get rid of the mandatory password/pin.
These are just a few of the annoyances I encountered.