Saresh is great. As someone who appreciates political dramas, I find her to be one of the more interesting characters in the game. She gave the Republic some well needed dimension by betraying it's values for her own self interests. Because galactic conflicts go beyond whatever battlefield the Outlander is on, it would have been nice had Saresh and Acina gotten more screen time.
Not sure what she would have done with an Alliance that's made up with some Imperials though.
Or after she tried to bluff her way out of getting killed. I never clicked on a dark side option so fast.