Not sure how or where you begin to dissect it. It was without doubt the must abject performance in my lifetime.
The squad selection was way too safe, if you know you are playing Rooney in midfield, why take Henderson and Milner to sit around do nothing - we picked players with no plan B in mind, players who can do something different. When we are losing we always resort to lumping it into the middle, in which case why not take Carroll? At least if you are going to get crosses in or lump it 50 yards, pick a guy who is heading royalty. Secondly if we are going to pick a wide player, lets pick one who can cross with that foot, ie Walcott plays wide right and is right footed, instead of picking players who cut in every time and run into the crowded areas. It just makes defending so much easier. If you pick 6 midfielders in your squad, instead of taking 6 passers why not take one who can run with the ball aka Barkley? By no means am i saying Barkley, Walcott or Carroll would have changed the outcome, but all three give you options of changing the pattern of play if Plan A is not working.
There are no leaders, even in my lifetime i can picture Butcher, Robson, Adams, Terry or even Shilton, beating their chest, pumping a fist, flying into a tackle, absolutely anything to get those around them lifted - this shambles looked like they couldn't be bothered, even Cahill, Hart, Rooney those with 50+ caps dont take responsibility.
Sadly it wont change, the FA will appoint someone safe, tell him what they want and how they want it, every opportunity we've had in the last 40 years to spice things up we've managed to avoid it, starting with ignoring Clough when he should have got the job.
Some day someone will work out International football is a world away from Premier league football, which is played at 100 mph, where the key ingredients are fitness, stamina, pace, strength. International football is played at a slower pace, where a good first touch, positioning, awareness and the ability to think on your feet are far more important attributes. For years we listened to the world best managers in the Premier League (Wenger, Ferguson etc) when they buy a "foreign" player it often takes them a season to get up to speed with the English game - but by the same token we just pick players on premier league form. Instead of identifying those who will suit international football.
I always insisted the Steve Gerrard was one of the best ever Premier League players, because he could play at 100mph for 90 mins (in his prime) yet as soon as he played internationally and the game was slowed, the flaws in his game, poor first touch, poor positional sense, were highlighted, therefore his club career was never replicated at the top level.
The list of faults and flaws in the English game is almost endless, but whilst the FA are rolling in cash, i dare say they have no interest in sorting those problems