Preposterous! None of these concepts will "de-clutter" the UI, I'd argue they will do exactly the opposite. The current UI has two toolbars, and concepts 1 and 3
still have two toolbars - concept 2 even has
three toolbars to complicate things further. There should be a 4th option of "None", as the thought of having a bar at the top is abominable.
We need
one toolbar for everything. I suggest something similar to this (notice how little the UI is cluttered compared to the proposed concepts, and also the amount of users online!):
http://i.imgur.com/5l4aieZ.png