Caporegime
10 should exist, but should be used incredibly rarely. I can think of maybe a couple of films I would rate 10.Your scale seems to be off. No point having something that will never exist, on top of that you have nothing for 2 and 1.
7 I would say is average, and is how most people rate it, look at IMDb 7 rated films.
7 shouldn't be average. 5 should be average. Otherwise your scale is needlessly skewed.