Those that knew about the true nature of Leloush's plan or figured it out at the end, they probably know that the new Zero is Suzaku. Thinking from their prospective, or else would Lelouch entrust to kill him.
How ironic that for such a long time, that Zero was Suzaku arch enemy, and in the end, he becomes Zero.
What happened to Schniezel? If Nunnally figured out Lelouch was good, than she figured out Schniezel is a bad guy at heart, not to mention Suzaku / Zero knows that, and a couple of others as well. Those that knew about Lelouch true good intentions they know Schniezel is not a good guy also, and that doesn't include Cornella. I am not calling for his death, but I hope he is punished by having to do demening jobs like a gardner, pick up dog poo, shoe shine boy, etc. Nothing against those jobs, but for someone like Schniezel is would be erabarassing.
Notice the last scene, when C.C. says "Right Lelouch", her eyes are looking towarRAB the direction of the driver. So Lelouch is alive.