[vhcook]

Interesting! I've been coming at this from the other angle -- looking at teams that haven't been to Championships for N years. For example, by my calculations, of the 29 attendees of this year's Greater KC Regional that are more than 8 years old, thirteen hadn't ever been to championships before this year (two of these teams are going this year, one being a Regional Winner, one via wildcard, the other 11 still won't ever have attended).