I think one of the biggest differences between the dancers of earlier days and the ones today is the place, where people primarily focus the dance. The old milongueros told that they looked at the shoulders, the upper part of the body to find the DANCE.
Today the the attention is mainly focused on feet. This phenomenon you can easily discover on youtube! If the person behind the camera cannot get the whole image in same window they will move downward and show you the feet. The same on workshops where people will eagerly learn the consecutive steps and only after that pay attention to the movement of torso.
I think this shift of primary focus has an impact on our dance and dance experience!