Hmmm, I dunno what I would call them but I really want to see a unit with these girls:
Yanagawa Nanami
Inoue Rei
Asakura Kiki
Ono Mizuho
Onoda Saori
Maybe their image can be that of a group that is supposed to be graceful and delicate?
and another with these:
Funaki Musubu
Wada Sakurako
Kishimoto Yumeno
Akiyama Mao
And this one can be a group supposed to be cool