This game would benefit greatly from a "Tackle & Loose Ball Aggressiveness" slider.
For the CPU increasing this hypothetical slider would make them more prone to go for tackles regardless of whether or not they had an open shot at the ball, as well as more slide tackles on players and slides to try and win 50/50 plays. This would help one of the great flaws of the game: lack of fouls against the CPU.
For human players it would make your teammates more aggressive. This too is a short coming of the game, with guys on your side being far too passive in terms of tackling and going for 50/50 plays.
Perhaps most importantly overall it would allow you to adjust fouls and aggressiveness relative to the length of half that you play, rather than having to adjust the half length to try and get the right amount of fouls.
If they were to try and fix the lack of physicality and aggressiveness of the game
without adding a "Tackle & Loose Ball Aggressiveness" slider, then they'd be robbing users of that flexibility to match aggressiveness to their desired half length.
Between FIFA and PES I have to wonder just what game these guys are watching, and just what game they are trying to emulate. Soccer is a lot more physical than what either FIFA or PES have put forth in recent times. I wish one of them would take that bold step forward and bring soccer games to where they need to be.
Hopefully someone out there is listening.