Thank you for the input.
It is possibale to train players before the match as well and put them after the training in your line up and train them again after the game. That is why they made the future like this.
In the past it was only 1 training per game round, so that was why you could;nt play and train a player on the same simulation.
Transfercap is hard, because it's different per length of league and players in a team. And still with a lot of training (and spending BC) or buying players will not make a differtent to very good teams at the end. And as well the way to make transfers is a thing a lot of managers love to do. Still you can choose for a league without any transfers. If you would like to be it more about tactics.
The playing styles are the style that implementated in the engine and will be like this. Because the entire engine is build around it.