I'm not surprise, I didn't believe in her death, it was too soft to the raison d'être of the main character (and there was the whole deal with her and Rohmeyer in two different ships)
I'm happy, if Nunally is alive, I can finally see a possible happy ending to Lelouch, and now...we are certainly going to see her eyes open, thanks to Jeremiah.
I don't see why this is making the last episode useless...Lelouch's anger towards his parents will have been the same if Nunally have been alive in his mind, the rest couldn't be avoided (Out of his wish to die in front of the BK...well this helped to give some Kallen/lelouch devellopment so, everything isn't lost.)
And I agree with Var and Tokkan, where is Our empress Kallen ?
Lol about the reset...I don't want to see this .