My friend and I are currently working on an UtaPri group...and we're in the exact same boat as you are, missing Natsuki, Ren and Masato. We had everyone and then they cancelled. We feel your pain, we feel it.
Anime Revolution 2012
Friday: Queen Chrysalis - My Little Pony
Saturday: Sailor Mars - Sailor Moon SuperS
Sunday: Castiel - Supernatural