Spicy ratings for books, please!

How many times have you read a romance novel only to find that there is not enough spice for you, or too much spice? What if there was a way to know how much spice was in a book before you even read it? Not too little... not too much ... just right.

Well, I am here for that idea. Maybe a scale of one to four peppers on the back, cover, or the inside cover if we want to be discreet. Maybe we can accept a scale similar to that of movies? It might be amusing, fun, and functional to see an NC17 stamp inside a novel. Whatever option we choose, it would ensure we match up the right book with the right reader, or even just the right mood (my level of desired spice varies depends on my mood and the day!) Who is with me?