I'd argue it rewards one-time results too much. But your statement reminds me of the guy at the club who used to complain about how unfair that I had a higher rating than he did because I was a woman, and then argued with the referee for half an hour after I beat him in an open. At one point long ago, women were seeded into events at one classification lower than their letter, which was pretty ridiculous. I earned a B in a women's event and a B in a mixed veteran event; which one should count more? I tend to chime in on these threads to say that while the seeding method isn't perfect, it generally produces consistent results, which is the purpose of seeding. And a more accurate method might be, as K O'N remarks, lend itself to gaming. I wouldn't mind being able to fence Div II again myself.