Thanks @MarileeTurscak
I think I am onboard with your input.
One point worth mentioning... you stressed enough about the "last reviewer" and he will overwrite earlier reviewers etc..
However, my practical observation is once any reviewer completes the review for any user for his PIM-admin-role, that row just disappears.
Later on if any other reviewer opens his "review access" blade to review, he IS NOT FINDING the already reviewed user.
So I am not sure how could he overwrite earlier reviewer's choices .
Appreciate your help !!!
Thanks.