Well, let's look, shall we? I happy to have my 2011 Baseball America prospect handbook handy, and we can see just where that talent has gone.
1. Shelby Miller -- Traded for Jason Heyward, arguably best player on 2015 100-win team, and when he signed with the Cubs the Cardinals drafted Dakota Hudson, whose doing OK.
2. Zack Cox -- didn't reach the majors. But was traded for Edward Mujica, who became an All-Star for the Cardinals as a closer.
3. Carlos Martinez -- still here.
4. Tyler Jenkins -- part of the deal for Heyward with Miller.
5. Allen Craig -- cleanup hitter for a pennant-winner in 2013. Traded for John Lackey, who was a part of that 2015 team that won 100 games, ran out of gas in October.
6. Lance Lynn -- gave the Cardinals 16.0 pitchers WAR, left as free agent when the phone didn't ring asking for him.
7. Eduardo Sanchez -- Brief look. Plucked off waivers by Cubs.
8. Seth Blair -- Didn't reach the majors. Is the only pitcher the Cardinals took in the first round from 2006 to present day who was released before reaching the majors or being a part of a trade that netted a major-league talent.
9. Jordan Swagerty -- Released in 2015.
10. Joe Kelly -- Did OK for himself as part of the Cardinals' rotation and bullpen, helped a pennant-winner in 2013, and was part of the deal for Lackey mentioned above.
11. Matt Carpenter -- You're familiar with his work.
12. Daniel Descalso -- You're familiar with his work for a World Series winner in 2011.
13. John Gast -- Had a moment, had an injury.
14. Fernando Salas -- once led the Cardinals in saves, so much so that as they were about to non-tender him the Angels offered Randal Grichuk and Peter Bourjos in exchange for him. Probably should have included Randal Grichuk in the above poll.
15. Adam Reifer -- Didn't climb much higher.
And from there you have Maikel Cleto (claimed of waivers by KC), Adron Chambers (scored a big run and was a Sept. pinch-runner), P.J. Walters (part of the 2011 trade that jumpstarted a championship team), Francisco Samuel (had a moment, struggled), Pete Kozma (chills just ran through D.C. with the mere mention of his name).
24. Oscar Taveras.
25. Tony Cruz -- Molina's longtime backup, now coach.
26. Bryan Anderson -- never became the backup imagined.
27. Adam Ottavino -- Done ok for himself, made millions, taught the Cardinals a lesson about development that has helped them nurture contributors since.
28. Daryl Jones -- Did not find success in Class AAA.
29. Steven Hill -- Had a solid career as a catcher in the minors.
30. Ryan Jackson -- reached the majors.
We could go forward to the next year and see Trevor Rosenthal, Martinez, Kelly, and others who were key parts of the 2013 World Series team. In fact, throw in Michael Wacha, drafted in 2012, and the Cardinals had a fifth of their roster from the 2013 pennant winners come from the ranks of the farm system that was considered one of the best in the game. In the next few years they would produce the players that they traded for Ozuna and then traded for Goldschmidt, and also traded for Brandon Moss.
Hope that answers your question.