It looks like he needs a LOT more muscle over his neck, and possibly a little
more weight. Conformation-wise, he looks like he has a nice uphill build with a good shoulder and hip, and very correct withers. His hind legs look powerful and he has a nice angle in the pasterns on his forelegs. He looks a little low in his hind heels though. That can usually be fixed with proper trimming. My suggestion would be to point him towards hunter jumping - all that power in the hind end would make it a good, interesting sport for him (might make him like the ring better!) and it would make an easy switch from western for you. Hope that helps!