Perhaps you can let us know what your corps experience is and how you came to the conclusion. I'm sure we would all like to be educated on the matter. Sometimes the music calls for standstill playing or posing. Moving while playing extremely difficult passages might take the focus away from the music. As fans and viewers, we have our own preferences on how we observe and "judge" drum corps. There are always many factors to consider. When I marched, I found that it was often more difficult to move and play during tied whole notes. But I would like to know where you draw your conclusions from.