During Aria's side missions to unite the gangs, you're told to free Jona Sederis so that Aria will gain the allegiance of the Eclipse mercs.
In my previous playthrough, I instead told Sayn to take over the Eclipse, as he seemed like less of a psycho killer.
This time around though, I'm playing a renegade Shepard, and I'm considering freeing Jona.
Will she kill anyone important to me? Will the Eclipse be more powerful as a result? What exactly happens if I free her?