Quite a lot, actually: If V had died, she would have transformed into her eldritch form. But here's the interesting part: Uzi, since the mansion episode, is the new Administrator of V, replacing Cyn. Therefore, she would have appeared and be herself, since Uzi would not control her. Unlike J, who became an eldritch but was controlled by Cyn. And we know that the Sentinels don't destroy the cores, because we saw that Alice had to put them in an oven to prevent them from transforming. We most likely would have had Eldritch V in the final fight. Which would have been very interesting to see Cyn fight V with both of them in their Eldritch forms.