I'm adding a suggestion:
With a power vacuum on the abdication of the Empress, Darth Voracitos and the Dark Council assume control to prevent Civil War. Observing the need for strong leadership and to prevent a major clash which will cost lives and resources, a full Council is appointed: I'd envision it as Voracitos, Sirella, Tirdarius, Depravious, Viera as Supreme Moff of the Remnant Worlds, Rytek as Fleet Commander, Kaine as Grand Vizier, then appointments for Spencer and Anaya as Knight representatives/Masters (if either/both is appointed). After which, we assign responsibilities and roles as required, and establish a proper body of law.
Each member would have voting privileges on any issue facing the Empire as a whole, and would divide territorial/administrative responsibilities, and also have specific control over particular areas of policy - Sirella's in charge of the Perlemian Campaign, I've got control of the Braxant Campaign, I imagine Depravious would want another front opened up. Viera and Rytek can combine to form another, or be our military arm - we say "Go", and they tell us how. Kaine's our Vizier and deals with internal policy. Spencer would head up our covert ops, or perhaps work to lead the Sith enforcement arm. Not sure what role would work for Anaya, but Nadia can decide that.
The pluses here: firstly, Voracitos can maintain a starring role without actually being required to do all the legwork of Emperor. Secondly, we can stop an IC Civil War that will deplete the Sith hierarchy and leave it vulnerable to the Republic. Thirdly, it would work - we have a Dark Council now, but it's not really being used, and it's tiresome having just three of us on there. Put it into action as a proper force, and it'd work - after all, we're capable of deciding Faction directly OOCly and ICly as a group (we do anyway, just with Jon being the one facilitating the discussions and then implementing them).
Seems to me better than a all-or-nothing roll of the dice on a single person. Also saves us having to do this again if something comes up, the way it has done for Jon.