I know what you mean, Messi used to be able to stretch any defence from the right, and Ronaldinho same on the left (and later on form Henry), with off the ball movement (just before attacks/plays start, starting positions). Now its more about Messi in a central no man zone, a Pedro who roams freely, is more about cutting in OFF the ball, not with it (and is in the wrong flank for him, better on left), allways given space to Alves there, never really doing any winger tasks. And a Villa who looks for central space at any given moment, and whenever he is on the left, its mainly to play it simply.
They are so used to outplaying anyone with short triangle passing centrally, that they even dont play quick counters initiated from the wing anymore (defenitely just Alves), or fake it to stretch out the opponent (now almost everyone's starting position is a central one). Its the same Barca football of previous years, but with less arsenal/options. They used to slow down games then quickly turn up the speed as a team, now, not as much (unless its Messi on the ball). In the league game, ONLY one who made deep runs was Messi, and he did it just couple times. Previous "golden" Barca team used to do it alot (majority of it being Eto'o).