The caveat with Faedo is that he was coming off TJ (which may factor a little bit into his performance / metrics) and likely wouldn't have been leveraged as much as he was by the big club if it weren't for the raft of injuries that that the Tigers rotation faced early on.
Having said that, now having to go under for hip surgery on top of coming off TJ, while fading fast in the last few starts, he's kind of in the same boat as a Kyle Funkhouser where it's easy to see him being lapped by other folks within the system, others coming back off injury (ie. Turnbull) or, less likely, possible free agent acquisitions in the future whenever the day comes when he could theoretically come back.