So, the "art" people are definitely connected to Tserriednich right? We had that guy in the abduction people who looked similar to the Tattoo artist in Tserriednich's group. We might be headed for a 3 way/ 4 way confrontation between the Troupe, Hisoka, Kurapika, and Tserriednich. Probably not though.
Sheila not being there and even turning away when they swore that oath is very interesting. She could just be disheartened and stricken by immense grief that she just wanted to quit all this and go away or something. But, something tells me it's not that. Could she have some connection to the "art" people or something? If she did betray the Troupe, i could see why they would hunt down the Kurta clan that rescued her. (or was it that she infiltrated them? I need a re read).
Also, do we see them standing around in cigarette butts? Or was that just mentioned. I need to know this. Am i tripping and missed it completely?
Another thing i found very interesting was that, Sarasa was embalmed. Preserved. There was no talk of them putting her to rest. And Chrollo even says "if i meet her again someday somewhere" or something along those lines. Could be me overthinking. But i found that interesting