here is my take on this proposal
- hidden status bar (toggled in View menu) OR removed status bar (with a semi-transparent file info as proposed here
- location entry box removed (URLs can be entered through File > Open File or URL)
- search box removed. (search is a separate node)
- header bar can also be hidden (for people who don't use tabs and can do without back/forward buttons. Configure layout button menu accessible through View menu)
with player on top
for the mockup i simply moved the search box into the search results view, but with this extra space we could do this even better with search filters easily accessible. It's worth pointing out that performing a search would still require only one click, as the search box would already be focused when opening search view.