dancingalone
Grandmaster
Also, the intent was to move away from the long wide unnatural stances and go back to the original narrow relaxed natural stances of Okinawan karate, which from the pioneer's perspective, were time tested and made sense from a longevity standpoint.
To be fair, the reason why Okinawan karate uses high stances is because the forms are meant to be fighting drills, at least in the lineages that teach bunkai formally or the bunkai ideas in an abstract fashion. I don't get the same feeling from the KKW forms, although by all means correct me if I am wrong. Instead if forms are simply meant to be a means of training the body, then it might be a good thing to adopt low stances to strengthen the legs as is done in many southern Chinese styles.
Okinawan styles also spend a lot of time with hojo undo physical conditioning, so the need for forms to play a role in physical exercise and strengthening isn't there.