Hey, thanks for sharing your opinion and sorry for the late response! Haven’t been active here for quite a while now, despite for updating my list.
One of the things I didn’t like about the ending was the fact that Ging does not really stay true to his words. Through the whole anime there is this golden thread that Gon has to find his father and even if he finds him, Ging will ‘run’ from him. Yeah, he still did not make it too easy for him in the end, but still I think it was a bit lame after making such a statement.
And secondly, as far as I remember correctly, you don’t get much information on Kurapika, for instance. Considering that he is one of the main characters of the story, I think they could have revealed a bit more.
I think I also had some other small critics but I guess those were the most important. However, all in all I still liked the ending. And this whole anime :)