Earlier quoted context omitted.
it will change a bit though. A rewrite for firefox' new plugin architecture is on the way
Will the rewrite reduce it to the utterly-useless form of a button that drops down a list of open pages? I've seen that sort of thing attempted a few times by browsers that are idiots about their UI and don't let extensions change it and it's really garbage. Firefox going that route just makes me profoundly sad.
just hiding the normal tab-bar might require a line of userchrome.css