I think the one thing that fans can reasonably call out GM's on is their philosophy of drafting. For example, I have always believed that good football players are better choices than guys who have eye-popping measurables but no real success at the college level to show. Especially with quarterbacks, you can see clearly that a guy is a winner, one of those guys who hates losing more than anything in the world. Maybe he is an inch short and doesn't jump as high, but he makes everyone around him better. Hoping to coach up a player at the pro level too often is a fool's errand.