Gotta jump in on this.
The front leg motion I'm guessing is supposed to be down and out. Needs to emphasize the out towards home more.
I will get jumped for this but he can land his stride foot slightly closed and have no issues getting his hips around. This is the only real mechanical adjustment my college coaches made.
Nothing I really disagree with from the other posters.
Slow delivery probably needs the hips to start towards the target first. He is also 6-3, his stride looks short.
I would guess being a tall skinny freshman increasing for strength and flexibility should be considered.