I really don't like the idea of Droid being a class. I mean if we're going to have droids in there, they should be a playable race. There were droid smugglers, and bounty hunters out there too...
Ooooo I just thought of something... 4th class. Republic: Technician, Sith: Beast Tamer(or Slaver...).
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." Thomas Jefferson