Escanor is going to die now that I think about it.
Ludoshel wants his commandment and might steal it/kill for it
The grace seems to be harmful to Escanor
He's extremely weak during the night and many people can explore that to kill him. Chandler just existing reduces Escanor to fodder-status power.
At the very least I highly think he's going to lose sunshine: it's not even his power and personally, I theorise that one of the Goddesses is going to do what Meliodas is doing: absorb the graces and achieve God status. Who would do that? One of the AA's or Eliz.
If Meliodas becomes God then you can only defeat him by becoming the next God or unless there's an entire plot twist to the story that bamboozles his position (e.g Mel father tricks him and takes the 50%? Idek)
I'm hoping that the sins and other main characters in the story suffer or face consequences since this is a war arc. Its fine if death doesn't happen but if this war arc turns out like how Fairy Tail did it I won't be happy.
Elizabeth won't die because I believe Meliodas will become God and even if she does - Nakaba will be forced to implement a time skip to introduce the reincarnation back into the story.