Oh, Togashi, you're brilliant!
Starting this chapter, I was certain all the loose ends were being tied up and that he might actually be headed toward ending the series. And then Ging dropped that bomb. Holy hell, that's so brilliant.
The series just got infinitely longer and has reason for more and more crazy, different, alien worlds, creatures and interactions.
I can't help but feel that the world trees are going to be literal worlds - that "planets" will actually be the surface/top of a tree's canopy, much like the Okuninju stalks characters fought on top of in the tournament in the Saga of the Three Kings at the end of Yu Yu Hakusho.
Augh, I can't get over how brilliant this is. I think Gon's going it alone for now.