I've not met or seen a current aikido teacher yet who possesses a clear understanding of how to teach their people to develop power and aiki. If there is someone out there- I would love to see it and test their methods out.
That's something I find interesting in what these guys are talking about, Dan. They're advocating a training methodology that devotes a lengthy period of time to just doing paired, static, wrist grab type scenarios where one person bears down and the other person is supposed to, over time, develop the ability to move through the technique without using muscle power.
I don't think its the "True O Sensei Way of Aiki" and I don't think its got much to do with martial training, but it seems to me that it might be a very good way to develop a stable structure that can deliver soft power in different directions.
It sounds like what I have heard the Roppokai do as basic exercises, and it sounds like the ICMA method of soaking in and storing chi.