Movie Rating System

It occurred to me that when I look back at all my movie reviews, it would be helpful to me if I establish a rating system to easily categorize and distinguish motion pictures from movies that I can watch over and over again, to movies that merit buying an original DVD for, to movies that I should avoid like the plague.
The next question is: What rating scale would I use and what would be the factors that constitute each scale level? Rottentomatoes uses its own Tomatometer on a 0% to 100% scale from its approved critics; similarly, IMDB uses a 10.0-star scale to show its average user rating for a movie. Since, this blog is nowhere near the magnitude and scale of those sites, it seems logical to have a rating system designed for a smaller purpose. Besides, this blog is for my personal use anyway. To that effect, a 5 scale rating would suffice. And instead of tomatoes or stars, I thought I'd be true to this blog's namesake and give it a 5-scale Drei rating.


1 - Drei: "Avoid Like The Plague" Why did we watch this in the first place? (i.e. Bangkok Dangerous, The Hottie and the Nottie, Scorpion King 2, etc..)


2 - Dreis: "Shite" No need to see these movies unless you have absolutely nothing else to do. Movies with high expectations but falls short on almost everything. (i.e. Righteous Kill, Max Payne, The Island, etc..)


3 - Dreis: "Okay" Good movies that could have been better. Usually gets half good reviews, and the other half so-so. The experience will also depend also on who is watching. (i.e. Clone Wars Animated, Fast and the Furious, The Devil Wears Prada, etc..)


4 - Dreis: "Great" Almost all facets of the movie were masterfully done. Great in almost all aspects. (i.e. 300, Dark Knight, Transformers, Slumdog Millionaire, etc..)


5 - Dreis: "Revolutionary" It will change the entire concept of filmmaking and how films are made from this point on. It will serve as the new gauge for movies of the same genre. (i.e. The Matrix, LOTR, The Godfather, etc..)