You know, like Destiny did.
Add a whole plot to the game.
Human NPCs.
New Enemies (Raiders!)
Re-record massive amounts.
It's been done before. Do I think they'll do it?
No.
But it's the only way they can salvage anything from this disaster.
Destiny (2014) review
http://unitedfederationofcharles.blogspot.com/2018/08/destiny-review.html
DESTINY is a game which I avoided until now because I had heard a lot of bad things about it. Also, for the very stupid reason that I really-really loved Halo and had an irrational dislike...