Or… he could have actually ended it at it's organic stopping point given the "health problems", and just done a new project occasionally when he felt up to it.
Well, he is doing kinda that. Hunter X Hunter 2011 ended at the world tree, and it's fine if people want to feel like they need a series to be wrapped up to be good. I wouldn't exactly call it the perfect, or most organic ending, but Gon finds his dad. Togashi clearly has a lot of ideas in the Hunter X Hunter universe that he wants to put out there, so I don't really see anything wrong with him continuing the series at the current projected rate of one volume per year. I mean, Vagabond isn't a bad manga just because Inoue Takehiko will probably never touch it again :sad:
I don't really think Steel Ball Run should have had stands out of nowhere and become the seventh part of Jojo, but clearly Araki has way more ideas to put out, and I'm just gonna let him put them out.