Well we have a few empires out there that could start a war, the Hutt Cartel is. Then in the SWTOR we still have remnants of the infinite empire, the Gree who are obviously up to something, and even the Yuuzhan Vong have been seen in the galaxy (300 years ago). I always thought it would be cool if we finally found out what caused that force plague in the infinite empire was created in a lab by a race of non-force or mostly non-force user race. Such as the Yuuzhan Vong or Gree =)
The Yuuzhan Vong aren't actually a non-Force race. Same thing happened to them that happened to the Rakata. Sorry, just had to nitpick.