I'm not sure it's as useful, since most federation can issue one, and judo is way more structured than BJJ on this points?

I realize it is probably not useful for being recognized with national governing organizations such as IJF, USJF, USJA, or USA Judo, but it would still be a peer recognized rank certificate to be displayed on my office wall. I see value in that aspect.

I think I agree on this, despite the more formal structure, it will add a more friendly touch to the harsh rigid structure of more formal Judo certifications.