Please make the Address Bar (when you click on it) take more screen in width instead of only the same lenght it has when not expanded: on small screens and when the sides of the Address Bar have many things (like addons): the address you can read is little, and while you can't do anything about it while you are browsing, you can at least have it bigger when you click on it, just like it was some version ago.
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YES! This would be very handy when you want to get at part of a URL closer to the end!
Hmm, I see what you're saying about the other toolbar buttons: after you click in the address bar to type, copy or paste, you don't really need all those other toolbar buttons until you are done with the bar.
I am not in favor of complicating the UI, such as enlarging only the address bar. Rather, I think it should be possible to change the size of the entire UI.