Absolutely agree. On my Surface Pro 2 (which I disabled all scaling on), I will sometimes fit a snapped column for the Mercury Chat GChat client, Adobe Reader Touch for reading documents, and then...
I have more free OneDrive storage at this point than I know what to do with:
25 GB free + 20 GB Office 365 + 200 GB Surface (2 years) + 20 GB Enthusiast (1 year) + 3 GB Camera Roll Bonus
How does using the taskbar in Metro interfere/interact with the bottom App Bar?
Those might actually be the built-in folders, not the libraries.
If MS really wanted to track you secretly from Windows, their OS that they have complete control over, why would they need you to log in to anything?