Re: why focus on internal power
I think the pareto principle applies to aikido as well as everything else. 20% of those doing aikido may be interested in putting in the hard work necessary. The rest are happy showing up and putting in the mat time in a recreational manner, to feel good about themselves, spend some time in a social group of sorts, and to get "something" out of it. Nothing wrong with that,
I don't think we will see sweeping change throughout the art. Again, maybe that 20% that has been wanting "more" but didn't know where to look. Sure, some stuff will trickle down, out, over as these guys figure it out and take it into the norm.
But again, how many people are really willing to put in the time that this will take?