So no one knows about the oath thing yet, unless I told them this week, since we didn't learn that until later in the war. Without that it seems a lot more reasonable to assume they'd keep attacking us with Melkor gone, or that his apparent disappearance was a feint of some kind. And there are lots of Quendi settlements random places that have been harassed by orcs which we're not in contact with which definitely won't stop trying to kill the orcs just because Melkor's dead, and presumably the orcs when not sworn to hate Quendi will still quite often hate us because that's how wars tend to go. And orcs are designed to reproduce really really fast and have overpopulation problems constantly, and I don't know how anyone'll handle that - actually, worrying they'll get in the way of humans having a shot might make more sense than worrying we will, we reproduce really really slowly.
It's - there'll be lots of problems, they're just better problems than Melkor. Almost anything's a better problem than Melkor. We could fix orc chronic pain, maybe, and then in a couple generations their grandkids would be back to growing up slower and wanting four kids instead of forty.