[Usability] Keyboard shortcuts

[Corey Burger <corey burger gmail com>]

As a recovering Windows admin, I miss a few keyboard commands from
windows. These commands all use the windows key. They are:

WK + D = show desktop
WK + L = Lock screen
WK + E = Show file manager
WK + F = open find command
WK + R = open run command (alt-f2 equiv)

Are there rational reasons that these would not be a useful thing to
have? My only thought was with other hardware platforms.

Corey