When someone rated your game in a jam you would get a notification and see what they said and how they rated.
It would encourage people to be genuine because right next to your comment there would be a rating, and doing something like: "The best game ive played so far, 10/10 - 1 star" would be much more direct!

It would also encourage people to give constructive feedback on your game to validate/make sense of their rating.

Also if you get raided by 1 stars you coud easily report it to someone in charge and inflated games would be much more obvious.

I would really appreciate  an option like this :)