His overhead marking is definitely his best asset. His leap means smaller defenders can't get near the point where he marks it and taller defenders wouldn't have a hope in keeping up with him. Also uses it beautifully by foot, his ability to weight a pass is delightful to watch. Defensive pressure is his downfall, mostly due to his endurance. Think it was reported last year he ran a sub 10 beep, which makes his feats in the WAFL even more impressive. this is the area he must improve on if he wants to have an AFL career. I was honestly astounded he wasn't at the very least rookied last year given his obvious talent. Clubs won't make the same mistake again. He's one of a few I'd like us to look at from the WAFL.
I think his sub-10 beep test was more of a mental thing rather than his physical limit. But yeah, absolutely agree with your assessment way too talented to be outside the AFL system.