You can't deny that the '99 team captivated the town and half the country. Nobody expected it. How did things fall apart in 2000?!?
1999 was a peak year for the bullpen, plus the annual reclamation starters blew doors off the projection.
Bowden went to create more offense (in an offensive era) and cut the defense and the payroll up for Griffey. In 2000 the pitching didn't repeat and the defense was worse.