Re: the header bar.
Sadly all GUI developers seem to be suffering the same syphilitic brain problem of removing anything and everything of use, and hiding the remaining features in stupid non-obvious places.
Desktop morons abound (Gnome 3, to a large extent Unity, Win8 TIFKAM).
Web browser morons abound (Firefox, Chrome, etc all removing menus and options that you might actually want to use).
Cloud services buggering around the same way, like Google's docs, etc, having things make more Fisher-Price and hiding them behind icons that mean nothing (WTF is the matrix of squares that now pops up the other services supposed to represent?)
A pox on them all :(