At the very end when (spoilers) lelouch gets stabbed he says "You will no longer live a normal and experience the joys of it". Then Suzake answers with "This Geass, I do solemnly accept." To me this sounds as if lelouch gave him Geass due to Suzake's words and lelouch's speech about suzake being alone in the world. So did lelouch magically gain the ability to give away his Geass? No that doesn't make sense, the only people able to give Geass are immortals like C2. I believe lelouch became like C2 somehow and that is how he is still alive and was able to give suzaku Geass. Oh and another argument is that nanulee was somehow able to see his memories of all that happened, which has only happened with C2, further confirming my suspicions. So just maybe the third season isn't a cash grab and they had this all planned from the very beginning. Please.