Everybody is moving to mobile and almost nobody uses Firefox on mobile. However, Firefox mobile does support extensions. Is that something that could emphasized? However, Firefox speed on mobile is much slower than Chrome. That should probably be improved upon.
For desktop there's not much of a distinguishing factor left. Chrome is good enough. I like Firefox for the privacy, but is that enough of a distinguishing factor for regular (less privacy conscious) folks?
FF implements what they call 'smart sizing' on Android. The basic principle is the larger the amount of disk space available (on Android they use disk caching) the larger the cache size. You can inspect this dynamically on your device in 'about:cache'.
I am violently critical of FF's current direction but to be fair to FF the reloading of tabs is a compromise to deal with how little disk space there usually is on Android (because the OS itself hogs large chunks of it in most Android devices).
I use firefox on android. Its frustrating at times. It doesn't integrate well with android stuff like opening up in apps I think. It takes me to the app store or doesnt even open in apps. Google stuff like looking at reviews doesn't work in firefox.
For desktop there's not much of a distinguishing factor left. Chrome is good enough. I like Firefox for the privacy, but is that enough of a distinguishing factor for regular (less privacy conscious) folks?