1: passing depends on tempo, short passing = slow, fast = direct, normal = mixed
If you play a fast tempo with short passes, the players will misplace a lot of passes.
2:Creative freedom is a game changer, both good and bad. If you have really sound players technically, like a ronaldinho or kaka or deco, etc. it could be good, it allows them to make the decisions rather than stick constantly to your tactics. On the other hand, if you put it to much when the players are not really creative and good at passing, and not technically sound, they will try to make crazy moves and their decisions will be wrong. So it can be good because players will make great attacking moves, but if it fails and they are out of position, they will get burned. (this can be done by position too)
3: "Playing offsides" is different from "offside trap". The offside trap is bad IMO because if you dont have good CB's, the players could get behind them. "playing offsides" means that your strikers will play offside and constantly try to make it behind the other team, but get caught offsides a lot, like Inzaghi.