Baseball Rabbi Classic: Dynasties that Should Have Happened... But Didn't

What teams are the most disappointing of all time? Which teams should have been more memorable, or won more rings, than they actually did? Pesach and Scott each provide a list of the top (or bottom) five non-dynasties of all time (with only one team making both lists). After last week's addition of the current Yankees to the list - this time with mathematical evidence - nothing is more appropriate than talking about