Didn't Force and Destiny suggest giving tougher adversaries an extra initiative action somewhere? I would've thought Dooku might've had something like that.
It's mentioned at the tail end of the Build-an-Inquisitor portion of the Adversaries chapter.
Same rules are also mentioned as part of the EotE GM Kit and suggested for cases where a single Nemesis is facing off with a group of PCs, to help cut down on instances of the Nemesis getting dog-piled in combat.