You should make destiny local co-op a open option so my wife can play the story with me. She wants to play destiny but not without me. She don't have any Psn friends. So please put local co-op in destiny for the story missions. Spit the screen side by side not top and bottom.
Even if you turn off most of the online features to have split screen, it will totally be worth it. I would love split screen even if it meant weaker graphics, and no crucible access.