Most (all) of these kids will regret trying to rush through college. I remember my now wife tearing up as we drove away for the final time from Syracuse knowing that part of our life was over. I was so geared up for the next phase of my life that I never really smelled the roses when I left in early May.
I would hope for most of these guys, if the opportunity arose, to consider graduate school, expand their knowledge base, meet new people on campus, and try and play a sport (if they can) that they will no longer be able to play once they leave Syracuse.
If there is a guaranteed NFL contract awaiting, and they graduated, certainly leave and begin your career. For the others, enjoy the bubble that is college even if it's in a literal bubble right now. You never ever get those years back again.