Updated Information
Some answers to the previous question.
You can customize the teams in the leagues but you have to buy that from the WE-Shop. I think is costs 2000 Point. Sorry I am not sure. I made the money with training, and Asian and African Cups. ( I only play WE because of the Master League, i don't care about anything else).
I have seen almost minor injuries amongst my team. But now the recuperation period ( You know, when the arrows become greyed) seemed to be longer.
I really like the fact that now the players can be injured without a foul. It seemed unrealistic that players only get injured when they get a foul in Pes4.
I am just about to end my second season on DIV1 6* as the Champion. I have managed to sign Eusebio (WOW), a youngster named Shimitzu, Rijkaard, Moore, and a few others during the winter off-season. Now i have a far more competitive team. I am not cheating ( you know, turn off the ps2 when you are losing).
By mid-season i was third place on DIV1 so many players agreed to sign me.
(At the end of the first season just when i get promoted only a few care to sign).
I have noticed that with my improved players my formation is not functional anymore. The problem is the second top (ST), i am not quite sure how to use this new role.He is not quite offensive nor defensive so he always tends to stay out of the play (No matter what player i use there he tends to get a 5.5 qualification).
The surprise of my team is Kallstrom, I got it just to be a substitute an now he is a definitive starter.
I use Formation A to turn my left CB into a very offensive LSB and my left side has become into my most effective attacking side. It´s weird because in previous versions i depend mostly on my right side players.
I have managed to understand the game. And now i can win most of my matches.
In pes4 i used to depend on the medium cross (O-O) now the low cross
(O-O-O) is the most effective cross for my gameplay. You have to have a good positioning striker to use this cross, but believe me, the new goal animations are awesome.
I have learnt to build my play. Now you can protect the ball with the body in an effective way and it's nice when you can do it inside the box and either get a penalty or dribble your way to score.
My central CB used to be a tall one, with good jump and header in PES4. Now use a fast one because now the CPU players are very good with the through-ball.
_____________________________________________________________
I FORGOT TO TELL YOU THIS IN MY FIRST POST AND IT'S IMPORTANT
_____________________________________________________________
Have you noticed that in PES4 sometimes a computer team buys a legendary player (Like Plattini) and he doesn't use him because in his programmed formation there is no such role (OMF in the Plattini's case).
Now the Computer changes formation depending on your team, his players, and the kind of game (Home, Visitor, Cup, etc.).
There is no more fixed 4-4-2 formations for the same team all time. Now they change the formation.
I really hated the fixed formation in PES4 but now if they have Plattini they alter the original formation to give him a space. I really love this.
Ah, and now they use to rotate players. I remembered that in PES4 sometimes you had to face the same team 4 times in a row. (League-Cup-WEFA Championship) And the computer will always use the same formation with the same players (Quite unrealistic, they never get tired). Now they change their formations and the players they use.
Now players get tired from match to match. I have Littbarski in my team and he could barely manage two entire matches in a row without fatigue. Now you need really good subs.
In negotiations - talent search there is a new option called utility players (They can play five roles minimum) i recommend to have a few good ones in your team.
Finally Cruyff can play ALL ROLES (CB-SW-OMF-DMF-SMF-SB-SW-WG-CF-ST-CMF-RMF-LMF) except goalkeeper. C'mon.
Hope you are interested in all this info.