I think Kurapika is very strong. With his restriction, he can't use 2 of his finger abilites. This is why people say, "So what can Kurapika do?" ... well he's still very skilled in Nen, and his specialist ability is one of the greatest in the series. I assume he has been training in the other categories after the 2 plus years since we've seen him, so he must be extremely good in certain categories by now. He may be limited, but that doesnt make him week. He is arguably the most haxed characters in this series because after such a strict perspective, he still can do so much against non spiders. His intellect in battle is pretty up there to the top tiers, he's intelligent over all, and his Emperor ability covers his restrictions. Kurapika is no joke.