All of the recent principles are being born out.
However, they are acting as stepping-stones stones toward what James is thinking is a higher level of Performance, Based on the current feel, and based on the relationship of this to some very good old Friends.
As per the subject line of this post, the best mental model today is to lay down the thighs, roll down the thighs, every inch of the trip. This helps achieve using the size as the power, and they invite a coordinated up list of the other leg in a useful fashion that has not been happening for quite a while.
Another quite useful idea which appeared and then disappeared several months ago, is to try and be as tired at the beginning of the journey as at the end. Yes. This at times invokes a level of relaxed cycling, without wasting energy on circinus.