Do Miura have the story all planned out until the end already? and just taking his time putting in all down in ink on paper?
I prefer that in case anything happen his studio would at the very least ensure the story gets to completion...
I've heard that HxH author also already told how he planned to conclude the story to his wife who drew sailormoon, not sure if this is just rumor or truth tho, so don't quote me.
BTW, how old is guts currently? mid twenties or something?