Yeah, it's tough to narrow it down to one. Most that I've wanted has been made. There is always room for more Cantina and Jabba's Palace things for me. I seem to want more of those made the most.
However, I'd like to see General Riekaan, Wioslea, Whipid, CZ-1, Madine, Ozzel, Hermi Odle, Myo, Tonnika sisters, etc.