Contemplating Meijia as a replacement in the rotation for Dickey is also premature. He has to earn it and nothing he has done so far has indicated he's even remotely capable of stepping into a major league rotation right now.
That's not to say he can't. I'd certainly audition him for the role in ST. But i sure as hell wouldn't be talking about giving him the job.
"Mr. Martin Tanner, Baritone, of Dayton, Ohio made his Town Hall debut last night. He came well prepared, but unfortunately his presentation was not up to contemporary professional standards. His voice lacks the range of tonal color necessary to make it consistently interesting. Full time consideration of another endeavor might be in order."