well, imo, it's totally comprehensible why they let HP out and put momokuro in. just look at the sales.
I usually don't watch this crap (boring as heeeeeeeeeell) but this year, IF I remember of it in time, I'll watch... the idol groups, ayumi, koda, perfume, mika, yuki, nana... interesting lineup. maybe could have been added some kaela or juju.