In both page and line 'Action Bars' (formerly ribbons, not sure if that's what they are called now), I frequently need to click "More options" to reveal one or two more dropdown menus, such as Line, Navigate or Report. This doesn't really decrease clutter but does require users to click more often and search longer for the options they look for.

Not showing the "More options" or "Less options" buttons when they would reveal just one or possibly two options would make Business Central easier to navigate.