Fact is with Dortmund, for all the praise they get as a well run team - they have only actually made one truly successful coaching appointment since they where saved from bankruptcy in 2005. And we all know who that was.
So really, about time they get it right, and they now have to do what the did with Jürgen Klopp, lay out a clear path and build upwards. OK, not expecting the same results, and to be fair - no one expected what Klopp did to happen either, it was that remarkable. And yep, this is a VERY different starting point and situation to what Kloppo got to work from and with. But still, they now have the coach they want in Marco Rose, they have to give time for this to work.
Personality wise too, he should be a good fit for them. Lively, exuberant, not shy about losing his shit when he needs too, but also humble and down to earth.