George S. Ledyard
I believe that one could incorporate all of the internal kokyu development aspects which have been under discussion and one would still not be doing "O-Sensei's Aikido" as he saw it. It wasn't about the technique!
But George, couldn't that internal kokyu be precisely what Ueshiba was able to use to be unthrowable, unbudge-able, unstrike-able? And wouldn't such an ability allow one to practice Aikido in the spirit of peace, without causing harm, without violence, as Ueshiba had intended? It means not having to use throws or waza/technique at all. All he had to do is "be Ueshiba," and attackers bounced off him harmlessly and unharmed. Or, he could direct them gently (relatively) away.
Maybe that's what he meant by "This is not my Aikido!" when he saw students robustly throwing each other, instead of the minimalization of technique. Food for thought. Oh, to have been a fly on the wall (but not in the way of any flying bodies...).