I fear that, with the many holes the team must fill and the enormous pressure a new OC must confront (as evidenced by the Arians critics in this thread), viable candidates may be reluctant to take on the challenge. Anyone with the kind of credibility needed to challenge this offense under Ben may be hard to locate and secure. O'Brien of the Pats could possibly have been that guy, but I hear he took another job in PA.
So what do you do? Take a chance on an outsider while trying to beef up the run and the O-line? Hard to see that all coming together in one season. And we ain't the patient types, friends. Ding dong, your witch is dead. Arians is history. But what is your alternative?

How does this offense have "many holes" to fill? In fact, all they need is 1-2 OLmen (assuming health from the starters and progression for Gilbert). After that, there are no holes whatsoever as far as starters are concerned.
I also dont think most offensive minds would fear becoming this team's OC or consider it a challenge. I think most would be sold on "Steelers" and "Roethlisberger"
they seem pretty thin at RB now. Mendenhall will most likey go on the PUP list and miss the first part of the season and Redman is serviceable, but not someone that I call a top RB. Dwyer is a plodder that has his own issues.
Well, I think my point was made with the remark "all they need is 1-2 OL-men" and assuming the health of their starters or progression from anyone is a big "if." I think Pouncey is very good, but he has seemingly missed more post-season games in his short career than Dermontti Dawson missed in his full tenure. Kemoeatu is the highest paid lineman and he was demoted to second-string in November. The guy regressed big time, and he is taking up valuable $ under the salary cap.The statements made about the RBs are on target. Redman is decent, but where is any real diversity of depth such as a pass receiver out of the backfield? Just how old or elusive is Mewelde Moore these days anyway? We love Heath Miller, but he'll turn 30 this year and his upside has already been tapped. Spaeth stunk and was rightfully shipped out but David Johnson has only 18 catches in 3 seasons and is essentially a blocker as Miller's back-up.
Wallace, Sanders, and Brown are super-dangerous. But if Rooney's goal is to keep Ben upright, it will be more of a balanced offense than a pass-first approach. Balance is great if you have a top RB. Yet, as was cited, Mendenhall may not be ready, nor is he necessarily viewed as a top-tier RB.
With regard to reluctance by candidates to take the OC position, the hornets' nest stinging the daylights out of Arians is essentially proof of how much pressure is involved. The new guy will have no honeymoon period. And make no mistake, except for the wideouts, this is a banged up bunch.