Times have changed, even a receiver would have to blow up like we've never seen before to win the Heisman nowadays. A receiver would have to have AT LEAST have the type of season Crabtree had, plus be on an undefeated team, plus catch about 4 or 5 late game winning touchdowns throughout the season.
But most of all, the receiver has to be well-rounded. I don't think we'll see someone like Floyd win the Heisman anytime soon. Gotta return kicks, punts, and run the ball too.
Think about this as to how times have changed.
In 1990, Raghib Ismail scored 6 touchdowns and many believed he was robbed of NOT winning the Heisman.
6 touchdowns.
Granted, he averaged 8.01 yards per rushing attempt and an obscene 21.8 yards per reception, but just imagine someone scoring that few touchdowns and coming razor thin close to winning the Heisman.
In 1990, Rocket had 1,723 all-purpose yards.
In 2009, Golden Tate had 1,915 all-purpose yards with 18 touchdowns and finished 9th or 10th in the Heisman voting. You need to do something crazy, basically something we've never seen to win it as a receiver now.
In 1990, Rocket averaged 13.6 yards every time he touched the ball. In 2009, Tate averaged 12.5 yards. It's crazy to think about.