From my point of view and that of some fans of the comic, it would be very sad to know that Henry will die in the future, leaving Quinn alone, suffering from the loss of his beloved. Some way could be found to transform Henry into half werewolf and half vampire, in other words, a hybrid. If this idea is not interesting, it could at least leave Henry alive for eternity with Quinn.
Yeah but Henry wouldn't want to live forever, even if he had that option. Its not an option though as werewolves are immune to vampirism and vice versa. The loss of someone he loves doesn't mean he'll be alone though