Estrada isn't going anywhere though, if someone gets hurt, he comes into the rotation.
The only down side is he may not be as stretched when needed but that will change after a couple of starts max.
It's hard to judge him to be honest, he's working on being average hitter and all his coaches are asking him to do is bunt or sacrifice himself, when he does that (or try to) then people complain that he can't hit.