@bromi,
I wanted to say thank you for the dt18 you shared.
I just tried your 62T on the "6th" difficulty and it really improved the default game (20 min game, manual, vertical cam).
You managed to tighten the things up and now the physicality that is in the game really shines.
It seems to me players are more aware of where the ball is compared with the unmodded game. Also midfielders are helping fullbacks to defends on the wings, so you can't simply cut back to beat the isolated defender (fb). Marking is much better, attackers have much less time to control the ball and you can't simply turn toward the goal like before. Overall you have to think more and quicker when you have the ball which I really appreciate. With the default game I really have the feeling I am in automatic mode when passing the ball which is really not exciting.
Concerning the cpu, I like the human mistake they do, they carry the ball at their feet when they should. I do still find they are playing a too direct type of football. I played against barca and changed their tactics to make them play a possession oriented type of football (minimal pass suppot) which worked very well with PES17 but they were still playing quickly passing the ball to their forwards without almost thinking. I was Juve and I ended the game with 56% of ball possession without really trying to keep the ball more than needed. May be the playing approach of barca is hardcoded, I remember in 17 it was the case for top teams (their tactic is unbelievably poorly set by default, full of contradictions).
I have to play it more but I had the feeling that CB were breaking the D line to follow way too deep a ball call made by a striker (something introduced by the update? Before the d line seemed smarter/more in synch to me).
Finally, one of my dream for modern PES gameplay modding would be to be able to edit the piece of code that control the imaginary line at which red players (attackers) stop their effort when their team is defending (same things for defenders when their team is attacking). This makes the teams been cut in two pieces too often leading to the midfield being bypassed. But I have to say that with your dt18 it is less apparent because of what I have mentioned above.
Long story short: Good job bromi!