What I don't understand about Vettel's huge salary is the evidence that he needs a specific car to perform brilliantly, not that he will get the car to perform regardess, and they clearly aren't going to give him that car in the forseeable future. Unless they plan to push the FIA to bring back double this and blown that, he's certainly no replacement for Alonso, who proves that unless you have a far superior car you do need the cream to compete. As Newey recedes RB are going to struggle with their YDP approach, and the arrogance of their success is there in Kvyat. It's like they've taken the Frank Williams approach to another level - we don't even need top recognised drivers.
Just adding to this, I haven't really heard much about Vettel's capabilities in developing a car, he can definitely drive one and exploit every ounce of speed out of a car. So there's no doubting his ability behind the steering wheel especially if its a OP car. But can he develop a car which he will have to do a lot more at Ferrari. During his time at Red Bull's domination years, mostly Newey and other RB staff talked highly of Webber's capabilities of developing and improving the car but not much in regards of Seb. I could be wrong but it is something that doesn't get heard much on Vettel.
With very limited test time I think a driver's car development has been stunted. Vettel and the rear end were a perfect marriage, he seemed to understand it,
so gave good feedback, but doubt he pushed the car in that direction. I don't know about the other stuff, but I suspect Webber's influence lessened as
they developed the car for Vettel. Even Alonso has been slated for not developing the Ferrari, but again we don't know to what length any driver develops
a car, particularly in a team environment.
The technical side has now overriden everything. In the last twenty years I can only think of two people who have made a constant and significant difference
across multiple teams, Newey and Brawn. You could probably add MS into the perfect storm of Ferrari domination but that was different era with different paramters.
Unless we're putting the Merc success down to him too. Nobody really talks about who made this Merc great, it just seemed to appear fully formed, like a freaky baby.
So if Ferrari are hoping and expecting Vettel to bring a faster dynamic to the team they'll be disappointed. He probably lied in the job interview and told them the
double diffuser was all his idea.
After the agony of defeat, success will be sweet!
He's a Ferrari driver now. 
