The first time I saw their weapons I remembered FFVIII Rinoa's weapon design. Maybe, it came from there? dunno...
Anyway, they should use weapons that are similar to that ribbon-like instrument at the Olympics, see?
During the dances, the ribbons form beautiful movements in the air and helps in the art of dance.
Current weapons are props practically unconnected with dance, in fact. They look more like mere weights that dancers must keep lifting. '-'