Late to this party - but if i were choosing a manager to replace Moyes, it would have to be Klopp.
Not only does he like heavy metal and wear hoodies (dude) but more importantly his football just feels so right for United.
I think that there's this myth that the "united way" is 4-4-2, with flying wingers. Thats wholly false as far as I'm concerned.
Our famous 68 team didn't play 4-4-2, neither did our 2008 team. (As it happens both played flexible versions of 4-3-3, depending on the game) The idea that 4-4-2 is the United way came from the 70s team and, of course, the 1999 team.
For me what has always defined United is the speed and youthfulness of our teams, and a commitment to attack. That doesn't mean young in years necessarily. Its about the attitude our players should have. It was what made the Busby Babes so special, and why that team is so important to United. It wasn't that they were just young per se - its that they played as only young players can, endless running, speed being the biggest weapon.
What I love about Dortmund's team over the last two years has been the speed at which they play. Press-press-press - and when they get the ball the directness and speed at which they move into attack is delightful. All one touch interplay and powering into space.
If Barca, and now Bayern, are the modern equivalent of Cruyff's Ajax team of the 70s, then Dortmund are the modern equivalent of the Busby Babes. Leave the heavy possession approach to Barca and Bayern. Dortmund have shown that speed and a commitment to attack still has a place in the modern game.