Varis, at least, doesn't seem to be fond of Elidibus. Nor has he been shown to trust him. I wouldn't be terribly surprised if Elidibus ends up taking out Varis and ascends to the throne whilst piloting Zenos' corpse. Ideally, I'm hoping for an interesting tale where Varis is exiled and/or barely escapes with his life and ends up aligning with the Warrior of Light out of necessity. When Regula died, his last words were about how the Emperor would have need of the Warrior of the Light in the future. I'm still waiting for the payoff from that particular plot thread.

Having Varis get involved in pushing for reform would be a compelling storyline and help makes things a little different to the usual approach of venturing into a new region, defeating the current leader and then replacing them with someone different. If nothing else, I have no doubt that if Varis dies it will be due to tragic circumstances and he'll be painted in a fairly noble light. That tends to be the case with the human antagonists in this setting more often than not.