I think that list of players who were once commits will follow what happens with recruiting classes in general: About 30-40%% of them will probably end up being major contributors, the rest will play small roles throughout their careers or will be victim to attrition or injury.
As a fan of recruiting, especially the kids that sign with us, it's easy to look at film and think every single one of our signees will be a major contributor to the program. History will show that usually 30-40% of the kids that sign with a program will ever contribute to a program at an impact level. You look at a program like GT with high academic requirements, and that 30-40% "success" rate is actually quite high because of the kids we lose to academics, on top of injuries, kids transferring out for various reasons, kids getting into trouble, and kids just not developing like we all hoped. Eric has mentioned it several times, but that 2013 class that was small to begin with and became smaller due to various reasons will hurt us down the road...and that's if the guys left pan out.
The reality of recruiting is it's a numbers game. You sign as many kids as you possibly can because the reality is only a small portion of each class will ever contribute at an impact level for the program.