So much ink has been spilled* about how bad guys will ultimately fail because they're self interested and will betray their allies when it serves them, so its fun to see that subverted with the Phantom Troupe. There's real respect and even genuine affection between some of them, and that is what lets the Yorknew City arc play out the way that it does with Kurapika getting as much of a win as he does.

The show even points this out, that this is normally the kind of weakness that the villains try to exploit in the heroes. Really interesting!

*Though I suppose this could be more of a western trope? I won't pretend to be super knowledgeable when it comes to shonen in particular, but I can think of other examples of bad guy groups that have similar vibes.