Re: "super" high ranking yudansha?
I haven't read the entire thread, but the idea of having an online list of yudansha is not new. It seems like it would fit nicely into the Aikiweb Wiki.
Certainly, you'd want to start from the top down, if only because there are a whole lot fewer judans than there are shodans. In a perfect world the ranks would include information on who awarded the rank, etc.
It's a lot of work. Is it really worth it?
I'm not entirely convinced.