Ed, the Fairness problem isn't all just the length of the sequence, it's more the overload of Masters flyers that take up so much of the total contest time in addition to the sequence length.
The time that is consumed by Masters class at a typical contest has much less to do with the length of the sequence, as it does that it is the so-called AMA destination class. The advancement rules (and to some extent "Move Up" peer pressure) cause many flyers to end up in Masters before their time. Couple this with the disparity between the skill required to be successful in the US at the highest levels in FAI vs. Masters, and I think you have the evidence before you that the contest boredom "fix" has little, if anything to do with shortening Masters sequences (and even less to do with the initial topic of this thread).