Original idea! Seems like a nice experiment for what could be a fully fledged game.
The only issue is that I didn't really get the logic of the rating; sometimes screens with little to nothing going on would get a high rating (although this would be understandable in some cases, as in displaying the word just before an answer is confirmed by the host).
It might be a good idea to set different criteria for rating increasing and let it know to the player beforehand (e.g. faces expressing emotions, screens showing new information...) so that the player would have to decide which to prioritize on the spot, but knowing what makes the rating go up.
It's like a 'hit the mole' game but with a twist; I like it!