I think the problem is that those hyped the most don't amont to much and don't live up to expectations, but you get most of your stars aren't hyped through the minors, but get a chance in the majors and do well.
A few of our hyped prospects
Rauch - AAA still, injuries can be tough
Borchard - AAA
Crede - MLB but not living up to his star hype
But thats just baseball....