I am sorry, but where I come from, trying to shut people up is considered rude.
I just used irony to try to suggest where your proposed feature could lead.
You can save the ranking proposal, though, for the upcoming Ilia's Workshop, where ranking the content would make sense. But instead of only allowing a certain elite to vote, it would be better to list all the votes, so anyone could have their own assessment on the results. The reviews allow the same, and usually are far more informative than a star ranking, provided you already know the reviewer's take on similar content.
Anyone who sticks around here long enough should be able to know those who have a similar point of view or preferences, who values feedback over visuals, or the other way around. Should be able to know the car or tracks specialists, the skinners, the physics or 3D model "fixers"...
Heck, one should even be able to discern the cliques that run around, how those shape and change, and sometimes dissolves.
One would see how some "experts", backed up by a clique, would push away good modders over some argument regarding "realistic physics" ou "correct FFB". The modders usually head somewhere else, and the "experts" disapear, or change their opinions.
Just because, depending on the season, people's opinions sometimes are for the highest possible quality, sometime for just having that content no matter what. Sometime they argue for "realism", but later the "feeling" becomes more important. At times, the correct car maker parameters are of utmost importance, other times a mod is praised for "how the physics where well interpreted and give the *corrrect* feedback". Sometimes a track surface is too flat and not realistic, other times it is too bumpy, no matter if it reflects the actual track or not.
So, the modder's luck around here, the reputation and lifetime, are actually depentent on the season, and the mood of the "experts" and cliques. So, I beg your pardon, but I am unable to see the value of highligthing and boosting any sort of "experts" opinion, based on any narrow criteria, whatever it is.
Of course, if one just checks in for the messages with download links, this would not be the case.
But if one feels the download links are getting lost among the discussions, a simple search for "http" should yield those messages, even those with embeded URL, just be sure to hit "Show Classic Search Results" on the top of the results page.