Anyone who doesn't think Blashill gets another head coaching job is just being naive.
1. This league cycles through the same 35 coaches.
2. Everyone understands this is a historically bad team, and no one outside the organization blames him for how bad the roster is.
He will find another gig easily.
The fact that John Hynes was unemployed for barely a month after lighting the match for that underachieving dumpster fire in New Jersey probably speaks well for Blashill's NHL employment prospects...
IMO, not being able to attach the word "underachieve/ing/d/etc." to Blashill probably helps as well. Unless someone is wearing rose tinted glasses from their favorite prospect/young guy not being entitled top line/PP minutes or the starting goalie job, Blashill has probably done pretty close to what you'd expect from the rosters he's been given. He's never had consistent goaltending and the only legitimate top line talent he's even had was an injury riddled 37YO Pavel Datsyuk that probably already had his heart set on collecting the big paycheck years on his contract and getting back home ASAP, and a 35+YO Zetterberg with a bad back. He's also rarely had consistent goaltending and has never had anything closely resembling a #1 or #2 dman. At least from the Red Wings standpoint he's been a net positive when it comes to developing young players, if not substantially better than Babcock was in the seasons that came after the teams last appearance in the Finals.
That's arguably a cleaner sheet than say someone like Dan Bylsma after he was dismissed from the Pens. Who, despite leading them to a Stanley Cup, massively underachieved with a roster that had arguably two of the league's top five centers in their prime and was often supplemented with big "win now" acquisitions. He also presided over a period where the Penguins were absolutely abysmal at developing young players. Despite that last factor, Bylsma was hired to steer a rebuild around likely top pick Jack Eichel...
As for this job offer thing. It probably has zero to do with Blashill's future prospects or him wanting to give up coaching. The Wings did the same thing with Dave Lewis and Ken Holland when they were both replaced in the offseason. Blashill's been in the organization for almost a decade so they're happy to give him something to do while he waits for the right opportunity with another team. Or... it's a sign that Yzerman has a lot more of that Holland loyalty than Red Wings fans hoped and someone needs to start writing up why it was a smart idea for Yzerman not to move Green at the deadline or give extensions to Green, Howard, Ericsson or Daley. Just in case...