At the end of the day, the main concern is when its during the advent calendar that ratings aren't as helpful.
Wouldn't that be the case for all packages that are not put together by the members themselves? With advent calendar it's probably only easier to spot, because many people got the same shows at the same time.
I think the single overall rating is not too bad. For each category I still could find several ways how to interprete it.
When you rate the model, you could rate her beauty or her emotions in that show.
When you rate the clothes, you could rate the outfit/costume or how she removes it.
And technical quality I would rate different 5 years ago and today for a set from 2015.
In real life I found out, that for me music is very important. Has nothing to do with the show, but decides if I'm in a "it's boring" or "it's hot" mood.