yeah we should look to hire a place and maybe cars.
Onji is living up in Hokkaido and has good local knowledge at this point.
I think he has been injured and off the forum for a while but he will be a great source of info to help set it up.
As for the question about powder here, every year (10) I have been in Japan has had great powder. Some more than others but its one of the most reliable spots in the world for powder. Hokkaido being the most reliable within Japan itself.
I would recommend a trip here to anyone who wants to ride powder. Lots of other great things to enjoy in Japan as well.