Hey Guys (and gals),
I think you guys are really missing something. Kokyu nage works well within a given situation, and a given set of circumstances. Just like EVERY other technique. Aikido places no stress on any particular techniqes. Fighting situations are as varied as fighters, and each fighter has a particular "favorite" set of techniques. Nikkyo may be my strongest today, ikkyo tomorrow. As I journey through, I may find myself embracing koshi as my favorite pasttime. You are in essence recreating yourself with every class. I have caught myself, and have stopped bending Aiki to what I think it is, and I'm allowing Aiki to transform me into what we are together!
Hope that helps.