Based on having seen him play extensively in college.
For one, I am not suggesting he should be a DE or anything like that. All I am saying if used as a blitzer in a scheme that was uber aggressive at attacking the QB with LBs, or a 3-4 OLB, I believe he'd be very effective. We probably won't use him like that since we don't use our LBs like that but let's say that during the year our defense is still struggling to get to the QB and Marinelli decides to bring more heat with his LBs............. I think Smith, if healthy, could be excellent at getting after the QB.
I think there are some misunderstandings about Jaylon as a rusher in this thread.
I think the point was brought up when someone referred him as our (cringe) " war daddy". He isnt that. He isnt that consistent pass rusher we are looking for in our defense. He serves a whole nother purpose for us. The elusive Leo? Perhaps, but I feel his value to us is much much more in his coverage range then as a hand in dirt rusher. As a blitzer, absolutely. May be even more effective at that considering how infrequent we do it. All it takes is one big play on a blitz to get opponents thinking about it.
However. In a different defense its a different story. A Rex Ryan type scheme? He is a guy you would see going after the QB frequently and effectively. A 3-4? Jaylon probably allows you to run more 3-3-5's effectively due to his ability as a blitzer.
Thats what made Jaylon a top 5 prospect. There are very few if any schemes he wont be able do what you ask him.
Could he put his hand in the dirt and rush? Probably. But in our scheme I dont see why you would want him to