So, let's speculate!
My choice(in no particular order):
1.Ana Ivanovic
2.Maria Sharapova(if she stays healthy
)
3.Svetlana Kuznetsova
4.Agniezska Radwanska
5.Caroline Wozniacki
6.Victoria Azarenka
7.Micaela Larcher de Brito
8.Queen Mom Vee
9.Nicole Vaidisova
10.Agnes Szavay