Gon wants to find his dad to find out why he was abandoned (a pretty human emotion), Kurapika wants revenge, Leorio is hiding something.
That's 3 hooks. The 4th main character hadn't been introduced yet.
But comparing a hour-long HBO drama pilot to a 20-minute shonen pilot is comparing apples and oranges. It's intellectually dishonest. Different kinds of shows approach introductions differently especially when one has 3 times the duration to develop. Not to mention the consideration that the early arcs of HxH are for a shonen magazine aimed at children. Although it does over time become a much more adult series (despite being in the same magazine - which accordingly led to quite a bit of censorship), the introductory pieces do need to be fairly simple so a kid can "get" it.
But to me, most of the hooks in Westworld were kinda.... eh. I wasn't very interested in Dores' sentience, I didn't really care for the behind-the-scenes characters, and the Man in Black was probably the piece of it I had the least interest in.