There’s no way to sugar-coat this: if the Atlanta Braves want to add a non-roster invitee to the active roster in a month, then it’s possible someone you like will have to be dropped from the 40-man roster to make the space.
The reason that we’re picking on Felix Hernandez right now is because of the extra rotation spot that has to be filled due to the (hopefully temporary) loss of Cole Hamels… and because we think that there was likely some assurance that King Felix would get every opportunity possible to make the club.