Liturgical dance is the epitome of all the efforts which have been put forward to put the people's focus on anything but God in the liturgy.  We can do all the mental somersaults we want to justify how this is somehow God-related, pertaining his beauty or some under-used form of praise of him, but the bottom line is that people are no longer directing their hearts and minds to God in the liturgy with such distractions.  Use the church as a performance hall outside of Mass.