Feature : Admin bar | WordPress.org

This is not clear enough. Please elaborate on each point.

Button to have a menu item to customize your template
I like to go directly to costomize theme with a button in the admin bar

Bottom Admin Toolbar
Show the bar at the bottom of the dashboar’`n sted oof the top (there is a plugin fot that)

Replace the toolbar dropdown menu with wp-admin menu
All admin menu items anbd sub items directly avialable

Enable/Disable button to toggle the toolbar
Show or hide the toolbar