The Blancos recovered from conceding an early goal to register a memorable success over an out-of-sorts Barca, leaving Luis Enrique with much to ponder.For the neutral the match had a little bit of everything, while the opposing camps will also have taken plenty from the proceedings.The Clasico threw up a whole host of important issues. Messi needs to reinvent himself to regain his best formLionel Messi has always been about more than just goals. While he stands on the verge of setting a record mark in La Liga, there can be no quantifying what he has supplied beyond the act of sticking the ball in the back of the net.He has for many years now been the man around whom everything brilliant about Barcelona has been based. He was the go-to guy whether 2-0 down or 5-0 up, whether domestic dead-rubber or Champions League final. And, almost without exception, he delivered.But the Argentine has hit a crossroads in his career.And while for some that means looking for gainful employment in different colours, fifa coins for Messi it is more about looking for new ways in which he can best serve Barcelona.This season, he has been found in an altered role seemingly more by accident than by design. The desire to get more out of Neymar - and now Luis Suarez - was always likely to impact upon the 27-year-old somehow, but it has been as much in the phasing out of Xavi that Messi's starting position has slipped increasingly deeper.With the trusty midfield leader taking a backseat more often than not this term, Messi has had to do more work for himself.