please reduce vertical space by adding two Unity features

[gaomb1 openmailbox org]

I would love to start using GNOME-Shell on Arch-Linux but keep getting 
drawn back to Ubuntu with Unity because of the efficient use of space 
that Unity offers.

Can GNOME-Shell please adopt two features:

1) merge titlebars into the top-bar when windows are maximized.

2) adopt global menus or Ubuntu's upcoming LIM app menus.

These two features are awesome and give users lots of extra space. 
Currently, GNOME wastes so much space I drift away from it. But I would 
definitely switch if GNOME got these two features.