Me personally, I can not believe that Konoha is destroyed.

And now remember what Kakashi was thinking before his death.

He needs to do something great to save the village.

SO could he destroy that explosion with his space/time ?

Maybe he'll seal it away with Kamui. And then he will die and become a hero.
Not just a copy ninja who died cuz hes chakra ran out (lol).

Instaed of this, hell be given the name of " Kakashi the viage-saver" or smth.
That wud be a mich better death, dont u tink?