I like the text. It is both open-minded and precise, and the descriptions are understandable - something that is quite hard to accomplish.
I devoted a whole section of my website to ikkyo, getting sort of carried away:
There, I show it against a number of attacks, but really just one basic form of ikkyo, no variations.
Wouldn't it be great with an ikkyo video library, where you could find many different interpretations of the technique, done by a number of aikidoists?