I like these questions and feel it’s an interesting idea. IMO I’m not sure whether Reich was really ready to be a HC in 2015. He had one year experience as an OC in San Diego under Mike McCoy who likely had a big say in the offense/playcalling. That team finished 9-7.
I think Reich learned a lot about being a HC from working Doug Pederson in Philly. So the Reich you got in 2015 was probably different from the one Indy hired in 2018.
Still it’s hard to say because of the QB position. We have no idea what Reich/Whaley would do at QB. I’m guessing they probably don’t bring in Tyrod who Rex advocated for.
Does Reich try to resurrect EJ Manuel, roll with Matt Cassell, or try to sign or draft another QB?
If it’s the former, I see Reich lasting about as long as Rex did.
Also we have no clue who would be the QB under the Reich-led Bills