Techniques don't matter in aikido
Now that I've been studying aikido for a while, I've whittled the number of "techniques" down to two. Irimi (entering motion) and tenkan (turning motion). The rest is just controlled waving your arms around. O-Sensei had said that aikido only has one technique. Many people have interpreted it as being ikkyu. I believe that aiki by itselft is the one technique, but that's my interpretation. My point in all of this is that the technique means less and less to me the longer I practice. What has become more important to me, is the principles behind the techniques, that guide the technique, that are demonstrated in the technique.
The purpose of technique
The way I've come to see it, techniques are available opportunities. I can never go into a situation thinking "Hah! I can do nikkyu." But, if the opportunity presents itself, with his wrist in front of me, I'm going to apply the wrist lock. The principles of movement and range that nikkyu teaches is what is important. The same could be said of any of the techniques I know.