Go here to tell Mozilla how horrible and worthless the new Australis interface is, and to protest them removing all features that are useful to power users.
They think they will increase adoption of the browser by removing everything useful, but in reality what will happen is that people like me who others look to for tech advice will steer people away from Firefox. Which is in point of fact exactly what I have already done.
I was helping a small company get set up. They asked what browser they should use and I said, “Just stick with Internet Explorer. Chrome is unsafe from a privacy perspective and Firefox has lost its way. IE is good enough these days and little different from Firefox.”
Good job, Mozilla.