>we could drop XUL and close the gap between B2G and Firefox Desktop
I hope not. Customisability is always the first thing to die in mobile 'apps'. As soon as that happens on the desktop, I'm moving to Pale Moon permanently.
What about this (using HTML instead of XUL) would make it less customizable? If anything, it's at least more accessibly customizable because more of us know HTML than know XUL.
Also, I imagine if this truly the way forward, XUL will be removed from the FF code base, thus making a XUL based Pale Moon trickier since it would be so different from upstream at that point.
I hope not. Customisability is always the first thing to die in mobile 'apps'. As soon as that happens on the desktop, I'm moving to Pale Moon permanently.