Review of Hunter x Hunter
HxH feels like a niche enough, big Shounen anime that didn't have a long enough run time before parts of the fan to turn on it. For one of your first animes, it's probably the least offensive popular Shounen anime out there. If comparing highs and lows with the other nostalgic animes, HxH honestly stands no chance, aside from their best arc near the end, but the issue is that HxH has far fewer episodes, therefore less mistakes to be made for them to receive the same amount of criticism because you can bet they'd have just as many filler and garbage arcs for profitsas other notable titles if they continued airing.
At it's core HxH is a Battle Shounen, the story is basically nonexistent, and you're just on for the ride of cool fight scenes. My absolute biggest issue with this genre is power scaling consistency. You have this rock, paper, scissors power system that is extremely confusing as you not only need to understand their matchups but their Nen outputs as well, and nothing is concrete so it feels like it's a power system where the author could bullshit enough ways to make fights make sense without making it seem completely impossible. People always praise this power system in HxH, have no idea what they're talking about, the last thing you ever want is to be questioning whether or not certain characters should survive, or win fights in this genre.
The pacing is relatively slow in some arcs, and drags on for too long. A large majority of the arcs are pretty dull and disinteresting and feels almost filler like with convenient main story plot. That narrator is extremely out dated and breaks the flow of the show constantly.
Aside from everything that there is to criticize about HxH, characters is probably not one of them. Aside from Gon, and I can go on a tangent about that but I'll refrain myself.