How exactly is Hiura in the OF "cringeworthy"? Based on the one career putout he has in LF? I can only assume he meant that the idea of it would be concerning, as to your point, he's barely played there. Hiura has serious arm strength concerns, so I'd expect a horrifically bad OF arm, like Khris Davis bad, in left, which would be a significant problem. Hiura would have to hit a ton to overcome terrible defense, and there's no indication that's a reasonable expectation at this point.