Firefox is not for general users, which is the problem that Mozilla's for a literal decade now. There is no way to make it better than Chrome or Safari (because it has to be better for every day users to switch, not just "as good" or even "way more configurable but slightly worse". It has to be appreciably better).

So the only user base is the power user. And then yes: sane defaults, and a way to turn things on and off. And functionality that makes power users tell their power user friends to give FF a try again. Because if you can't even do that, Firefox firmly deserves (and right now, it does) it's "we don't even really rank" position in the browser market.