Halo 3: One Year Later

[The Reclaimer]

Cortana while on the "Uneven Elephant", was going through the data she picked up while in the control room on Halo. She came to the conclusion that the amount of data that she accumulated while on Halo took up a massive portion of her memory space, and that it possibly made a huge cut on her lifespan. Question is... how big was it?

I think it would be an interesting start to a new Halo series to have Chief wake up to Cortana cycling him out of Cryo sleep because she's about to expire, and then she goes right before the first start. You'd be able to start the level with points of interest she logged for you before expiring and then maybe pick up a new AI along the way.