We had a no-nonsense bloke in Megson. He had to go because he like Coyle was clueless and antagonised the fans and players.
From what I've read from Wolves, Sunderland and Millwall fans, McCarthy is in many respects similar, often calling the Wolves fans "numpties". I'd also argue that he's not as no-nonsense as people think - a lot of Wolves fans say he is the sort to have his favourites. I can see him being like Coyle in this respect - special treatment for the likes of Kevin Davies etc.
Let's also not forget it took him years to get Wolves up. If people reckon he's gonna come in, sort the defence out, and get us straight back up there in no time, I think they have another thing coming.