Vergil is dead; Dante did not kill him, MUNDUS did. The recap specified that Nero Angelo was the SOUL of Dante's departed brother. Thus, Vergil was already dead.
Sparda is DEAD. Omnipotent voice over of a non-appearing narrator is basically the "voice of god" of the story. YOu cannot claim "oh, it's supposed to be some random human." It is the "Voice ofr God", the overstory that knows all of what happened and gives us that info, the voice of the author who knows what really happened.
Dante is the only one of his immediate family left. Naysayers need to get over it. No sequel will have a viable story reason to bring either one back bar an entire game dedicated to dragging Sparda and/or Vergil out of whatever afterlife they are now in.
Hideki has stated Vergil is dead, and that he hates Vergil, hence why he only barely got mentioned in DMC4. He's also said that there will be NO Dante in DMC5, only Nero.
All those in favor of getting Kamiya to get his butt back over to Capcom and get this series out of Hideki's idiotic hands?
Edit: VB, we have odd timing as I start writing my massive post right when you posted yours. lol