I have just started playing but one thing I've noticed from playing a few games and scouting future opponents is that when you start out being unpredictable doesn't seem to be a huge factor since a good portion of the lower division teams are not coached by active users and instead are often owned by users who signed in a few times and have since given up and are not booking scrimmages, actively transferring or training and have their tactics set to man/base for every game. If your opponent isn't coaching then you don't need to be predictable.
Obviously it makes a difference in upper divisions (and I assume in the play offs) but right now I am not freaking out too much about trying out trick my opponents and instead trying to figure out this whole training/playing time thing, manage enthusiasm and trying not to overpay for players like I did when I started out.