Addons ---> Firefox Features
They're keeping investors happy aren't they? Dumbos, clueless and greedy with idiotic, unrealistic ambitions to unseat Chrome have killed Firefox.
The smart thing for Firefox to have done, would have been to build in Addon monitoring; either into the browser or through contractual data feeds about usage stats from developers thereby delivering features users want. Working out what people want through forums is beyond the ken of anyone real or virtual, for something the size of Firefox.