Priestess of the Moon. My favorite skill oriented character and the game could really use more ranged dps options outside of Drow Lite.
Sand King. The gank king. Seriously this guy along with CM (glacius) are what make some games so incredibly fun and action packed the entire time.
Tinker. We need another power solo. At the moment there are maybe 3 power solos (Thunderbringer, Defiler, Torturer) and the rest are all serviceable but aren't exactly ones to worry about. Also, cmon, Tinker.