SmittyFL
The current classifiers are all labelled 99-XX as they were published for 1999 in book form and distributed to the local clubs for use. Prior to that most years had classifiers labelled for the year and changed annually or thereabouts (my experience dates from mid '90s only.) It seems that Sedro Woolley has not updated the list since this was published, and I would agree with you that an update is due.
If not at Nationals, perhaps at some other "Points Series" match or even a special match, a group of classifiers could be shot to at least get a start on a new list. Getting the best shooters there will be the trick! Another option would be to take some of the shorter stages in a national-level match and make them classifiers AFTER the match is done, using the scores from the match as a starting point for 100 percent. The difference between this and your first suggestion would be that it be announced ex post facto to prevent sandbagging. Grandbagging prevention is another thing...
One of the features of the USPSA site is a listing of which classifiers have been shot by local clubs, and they are encouraged to not repeat them too often; I believe there is actually a prohibition on shooting the same one more than once in a given year. We all have seen manipulation of the classifier system for personal gain in both directions, but I haven't been able to come up with anything that is better than the current system and yet allows for flexibility. We in FL are blessed with outdoor shooting all year but those in less clement climates may only shoot 6-8 times yearly, dependant on local weather and club schedules, so the need to redo a classifier may be real, and actually reflect the shooter's ability.
Butch