I believe that, once you have been "calibrated", no amount of perfection in your pattern will do any good. For many, your score range has been pre=ordained. Your near=perfect pattern might budge the judges a little bit, but once your "area reputation" has been finalized, you just have to be content with the same ranking as ever.
The solution, of course, is to move to a different part of the country, and fly under an alias, where they might not know you.
For the most part, I don't believe this is the case. I fly, and I get pretty close to the score I think I deserve. I judge, and I'm not thinking "OK, it's Bob FliesWell, he gets a 38 on this maneuver" or "Oh, it's Ralph CrappyCorners, he gets 28". Where I do see the same people coming out and getting the same scores, it's because they're flying about as well as they always have.
There
are a few people whose patterns I recognize, because they make the same mistakes over and over again -- there's the guy who would be making 40 point loops if only the rulebook called for 15-foot long flat sections on the top and the bottom, and the guy whose triangles would consistently score 33 or better if only the rulebook called for a triangle to start with a 95 degree turn, then have another 95 degree turn, then have a most-of-a-half loop to level, and all the guys who pop up on takeoff (which, unfortunately, I did today, and it showed in my score). But if I happen to be judging them, I'm not marking them for
who they are, I'm marking them for
how they fly.
The solution is to take the trip down to California once a year and attend the Stunt Clinic down there, or the one down south (Georgia? Louisiana? I can't remember -- sorry guys, I just know it's someplace with heat, humidity, and kudzu). Then your mistakes will be pointed out, and you'll know what to work on in practice.