Yeah never been a feature that much I am sure. We have never altered the catrow function like that in pp-inc.php The only clickable thing on the catlist is the arrows to take the user to the last product or last review posted.
In fact universally in our application any clickable username in our application everywhere goes to the user profile not to the revshow script.
In fact the ability to show all reviews of a specific user was not expanded into the products revshow script till like version 6.1.
There is a link on showmembers script
- AllEars.net Review Page
In 6.1 I expanded and put one on the poster information box on showproduct display but you elect not to show poster info.
It looks like you also removed the memberlist feature too.