Wholeheartedly disagree that L1 run triggers are the solution. It omits player personality from the equation, which would be a shocking state of affairs for PES. As has been said, L1 triggering in FIFA is a band-aid for poor AI. The movement in PES is fundamentally better even if it turns out after a few months of play that this is still an issue. If this was the case then the solution is to improve the AI's responsiveness to tactics and the situation at hand. An L1 trigger in PES would unavoidably be a band-aid for poor tactics and I'm dead against that. It really would give PES the always forward attacking problem you see in FIFA regardless of whether the players are tired as a exult simply because people really would just bludgeon their way forward.
The closest I could ever come to a compromise is for your trigger button to 'request' that a player makes some sort of movement, but the direction and speed of the movement being based on the player you're triggering rather than being a uniform sprint up the pitch. Maybe I'm the only one who thinks so but getting Demichelis or Badstuber to make the same runs as Robben or Muller would be utter bullshit and make a massive part of the game completely impotent. It soul be the PES equivalent of a severe stroke.
this is why i belive setting the arrows worked so well before, you set where and the frequency of the runs you would like your player to make, and then the players stats influenced how good/bad and often this took place. the two vids i posted above have been happening in every game.
i dont even want to have to tell a player to make a run by pressing L1 i just want him to react to the situation and if do so, which used to be the case.