My issue with Elvis has always been I'm not sure that a season of being out of his depth is good for his development. He's at least a couple of years away from a "proper" call up, which might never even happen.
On the other hand wins this year are irrelevant and if he had a more normal season developing in the Royals farm, it might be good for him personally but wouldn't be for us.
My preference has always been to try to work out a trade - at least the Royals get something and we can send him to the minors where he belongs.