So based on what others are writing and having talked to people that train with him hands on - it looks/sounds like Ikeda is trying to get people to grokk to the basic connecting center to center stuffs. Which you need, but then there's a whole body conditioning aspect that I wonder how explicitly is being addressed? Then there's the skill component, ways to train it (ideally through the taiso and aikido techniques, but that would require relooking at how a lot of techniques get applied, potentially) - and ultimately how to apply it to your chosen martial art (i.e. aikido).
Maybe you should go train with him yourself?
Seriously. If you want to know what Ikeda Sensei is doing, the best answer is to go to one of his seminars.