Conducting dance is every bit as difficult as conducting a classical concert, but it is not given the same importance, partly because relatively few conductors ever do it. Also, the conductor isn't entirely free in matters of phrasing and tempo. For example, you quickly learn that if a particular dancer has put on a few pounds, the tempo must be made quicker. And in terms of the drama of ballet, there are so many parts of conducting architecturally that you have to think about. You may have the most exquisite adagio, but if you can't build the right dramatic structure you aren't going to be able to bring out its full effect through contrast.
