I beg to differ. A team can still build around a specific tactic, but it could also cause the manager to think/buy players/prepare for a secondary offensive tactic. Let's say that Team A usually uses Motion, but knows that Team B adjusts its defense based on their opponent's offense. If Team A has a few players with nice secondaries, they can switch to, for example, PTB. I think it encourages tactical diversity and makes the manager think more. Sure, knowing that my opponent could guess right and beat me in a close game is a bit annoying, but it makes the game a lot more fun.