I love Firefox but updates are becoming annoying to the point of me not wanting to use it anymore. It's bad enough there are so many updates, and it's bad enough that we have to mess about with CSS to customize Firefox, but having to redo the hard-gained custom CSS regularly leaves me speechless. The CSS may be obvious to you folks, but for anyone not knowing the browser structure it's a time-consuming nightmare. Rather than coming up with fancy new features a lot of people may not need anyway, please first make it more usable by adding options for features such as the tabs position and adjust the CSS behind the scenes.