I believe the area of grey circular dots could be better occupied by the numerical count of the number posts up for reviewing in that subsection. When there are no posts for reviewing in that subsection, it could be left blank.
One use case for this is that I don't always want to open the
/reviews page if there's only one item requiring review. I would instead want to focus on a different problem or skip reviewing at that time altogether.
I hope this is easily doable.