Easy to choose from classics but the Anime genre seems to be slowing down as I've not seen a lot of good ones come out in a long time.
1) Ghost in the Shell as there are a lot of unexplored options in this line. Every manufacturer just goes with a safe generic standing Motoko pose. Need a sexy action pose with one of the spider bots.
2) Black Lagoon (Mmmmm, another sexy Revy statue like the A+ Cowgirl Revy
)
3) Berserk is a maybe because several top end sculptors and companies are already in this space
4) High School of the Dead (i can see a lot of possibilities with this one)
5) Fist of the North Star
6) Gantz
7) Appleseed