He is a monster to compete with, so I generally like anything that improves our chances. For that reason, I'd like to see him go.
But I'm not so convinced he leaves. For all we know, he may enjoy college. A lot of NFL talent stays an extra year in college. Logically, we can see he should leave, but the decision is really up to him and he he may have more complicated feelings about it than our logic can discern.
If he were my friend, I'd tell him to do what he wants to do and not what everybody else thinks he should do.
Has anybody seen a good analysis of his prospects for success in the NFL? I think he'll be great because he has that quick release, that football savvy, those feet, that speed, those instincts. But I haven't seen him in a pro game yet, and I've seen a lot of great college players look pretty ordinary on a pro football team. But like I say, I haven't really looked at it closely so I don't know how he's been rated by the pro scouts.