Chris, I agree to a certain extent. Where I hold back is the place where I deeply believe that aikido is an evolving art that daily discovers more and more about the human condition.
Ancient mysticism and esoterica are great for appealing to certain minds. When I was a thesophist I couldn't get enough of James, and the whole phenomenological movement. When I first studied aikido, I sat zazen and studied koans.
But now, well, like you said, I have limited mat time and I learn as much aikido from the world around me as I do on the mat. My students are mostly engineers and physicists and I see aikido developing in people all around me who have never heard of most of what has been discussed here already. Thanks.