At NFP, Draftmetrics has been doing a series on all kinds of draft analysis.
This one was kinda interesting and surprising looking at the past ten years:
First the % of players drafted from Automatic Bowl Championship SeriesQualifying conferences- Image: http://puu.sh/2tOie
The Saints are noted for the amount of small school gems they have plucked. Looks like it's not that they do so many, they just have a high success rate with those that they do pick.
Next is which teams draft the most and least from each conference- Image: http://puu.sh/2tOm2
-dirty birds by far the biggest SEC drafting team.
-Saints high on Big 10 & Pac 12 players.
-Saints on low end of Big 12 & other BCS schools