Seems like an interesting start to a new arc, but I don't get how the heroes are connected to all of this. I mean, Leorio is still trying to do his doctory stuff, Killua is off with his ambiguously female sister, Gon just found his father and whatever, and Kurapika is off doing god knows what. What's the point at creating four heroes if they don't even work together? This goes against all shounen principles.
Yuck.
(The manga's still awesome. It's just me bitching. Sorry.)