I forgot about that lame *** group. They basically all got beat by Uvogin. They weren't hunters iirc just alleged powerful nen users in the underworld.
Funny enough that was a badass way to show how powerful the Phatom Troupe is by how easily one member beat this other group (also the rest then killed a whole bunch of the mafia at the auction and robbed them).
Yeah, there's no hope for the old anime to come back and do the dark continent simply cuz Togashi is a slacker. Who knows when that arc finishes.
Unfortunately, no H×H anime until the manga is finished.
Eventually Togashi is going to want to do a new manga or something and he'll have to finish/wrap up H×H (basically same thing that happened with Yu Yu Hakusho and the creation of H×H).