Captain_Erebus
In fact, killing Shanks is useless. Let them go through this humiliation so that they become stronger. Let Shanks see how much stronger a demon fruit can make a person. Maybe one day Shanks will get a good fruit from Paramecia, like the gravity fruit, but I guess Fujitora hasn't eaten it yet, who knows? And just like Shanks spared Ashen an East Blue, Ashen will spare Shanks this time in Elbaf in the New World.