It'll support XUL when Firefox drops it.
I've used Tree Style tabs too long to give it up.
UI doesn't constantly change. The UI is pre-Australis. This is one of the reasons I moved to Pale Moon.
In the past I moved to Chrome because Firefox seemed bloated, but after many (HN) articles arguing that this has been fixed, i decided to give FF another chance.
But today I noticed that despite the fact that Tab Unloader actually does unload tabs, the Firefox process takes 1.5 Gigs on my computer even though pretty much all tabs should be unloaded at this point. It also seems to take longer for FF to show up when I alt-tab to it.
Am I doing something wrong here, or is FF still a bloaty piece of (admittedly) configurable shit? I really don't want to move back to Chrome, but there isn't enough ideology in me to opt for Firefox if it still sucks.