i say no, it's good for the game in my book to let the kids stay in school and mature another year.
No, where does it stop like the NBA. Bring them in right out of High School. Someone will get killed. Like the current system.
Right off the bat that sounds logical, BUT now there are option QB's "running QB's" and they have a low shelf life also. So once you open the door then you open arguments for other high risk positions... keep it at 3 years for all or change it for 2 years for all, other players might change their designation on the college team to go out early. So keep it the same for all...