This has potential Rated 5 out of 5 stars
This add-on has potential, but the fact that I cannot move the buttons to anywhere I like turned me off on this add-on, allowing the ability to move the buttons or remove them individually and this add-on would be perfect in my opinion.
Armed with this new info (thank you Dev!!) this add-on gets 5 stars!!
It has this functionality
You can customize your toolbar and put any of the icons anywhere you want (google for help on this if needed). The icons in the 'add-on' bar are depreciated (since the add-on bar has been depreciated by Mozilla) but remain there for the users who want to use it still. You can turn off all of the add-on bar icons by hiding them (in the options, right click any icon to get to options) and then just use the customize feature in firefox.