You focus way too much on that 4-4-2 thing.
Like I've said before: it's not the formation on the team sheet that decides the formation. It's the
role of the
players that decide this. Rooney is primarily a goalscorer, and his whole game is centered around it. He's not an offensive playmaker, and he'll never be. His high number of assists only reflect a high number of rebounds, set pieces, and fighting inside the box more than anything.
Since Rooney is a goalscorer, playing with him behind the main striker is more like playing typical 4-4-2 than it is 4-2-3-1. It's all
semantics and
interpretation, really. When I hear 4-2-3-1, I immediately assume that the player behind the main striker is an offensive playmaker. I'm thinking of Mata, Oscar, Kagawa, Özil, Isco, Iniesta, Reus, Götze etc etc. When I hear 4-4-2, I think of Rooney, Agüero, Tevez, Suarez etc.
But ignoring the whole formation debate, it's still clear as day that Rooney and Kagawa have extremely different styles. Kagawa was perfect for Dortmund, and a keyman in their attacks. Klopp adores him, and wants to play the type of football where players like him can thrive. Thus I find it hard to believe that Klopp would have played Rooney in the AM role in team that has Kagawa(or Mata for that matter).
It's a bit ridiculous how you blame Rooney in that position for all the problems, makes no sense to me.
I'm not blaming Rooney. He's a constant goal threat, so he's doing his job. I'm simply saying that he's not an offensive playmaker. Using Kagawa instead, unlocks certain possibilities that didn't exist with Rooney in that position. It obviously goes the other way around as well. Rooney offers a lot that Kagawa doesn't offer. But it is my
subjective opinion that we would be better off long-term by playing Kagawa in the hole, and have Rooney either fight with RVP for the striker position, or move out as a wide left forward.
I can't say for sure that we'd be better off like this(especially with Moyes' style). But if we tweaked our style a bit, then I'm sure Kagawa(or Mata) is the future. If we tried to implement Klopp's style, then I don't doubt it for a second. Rooney is world class, but some styles suit him better than other styles. In Klopp's system, I'm sure he would have been used as a targetman or a wide forward.