I was just browsing IMDB and stumbled on Catherine Taber's profile. She does Padme's voice on The Clone Wars and she voiced Mission Vao on KotOR. It turns out she also has a role in TOR, according to IMDB. LINK
Also returning is Jennifer Hale, who voiced Bastila in KotOR (and also Aayla Secura on The Clone Wars).
Another thing to note is that IMDB lists a few characters that I haven't heard of before, like Seargent Jaxo, Jaxx, and Bengel Morr.