When I watched Hunt in the spring game, I did so without regard for, or knowledge of, the constraints placed on him in order to conform to our defensive system. I just watched the physical stuff and how tough a time he was giving the guy in front of him. I felt Green was as quick off the ball as any GT player in memory. He was good at knifing into a crease, staying very low, on a short yardage type of situation. That is pretty much where it ended as far as I was concerned. The pass rushing ability wasn't there. Nor was the speed in pursuit.
To my eyes, Jabari has the ability to move great distances laterally in quick hop like motions. This gives OLs fits because it allows him to get angles and leverage more easily. He also has very good hands in my estimation and would be very good in the self defense martial arts type of stuff if he wanted to. He shucks blockers really well. Probably the most impressive characteristic was touched on earlier in the thread, his pursuit speed. Jabari is fast enough to catch people from behind and / or change RBs routes horizontally. If you hesitate at all, looking for a hole, Jabari will find you. He made several tackles from behind running east and west in the spring game. We haven't had that. Gotsis comes close, but Jabari still runs pretty much like a LB. He was fast for his size then and he still is.
I know Roof has a plan and I know Jabari will have to play within the system. Maybe therein will lie his greatest challenge. I think he has enough talent and ability to be a fairly elite player, but I also agree, his productivity will be dependent on the development of his knowledge and instincts of interior play. It will be fun to watch.