I think that the use of strategies indicates a deeper level of thought & understanding of the chosen art.
Here is a small bit of strategy for you
It is to present a target to your attacker.
For example if you slightly lean your head forward chances are your attacker will try to punch you in the head rather than the rest of the body. To know where uke is going to attack would be a big advantage. I cannot say that I've ever tried it, but I know of some karateka that use this same principle when sparring so that their opponent will commit a certain type of attack which they can counter with a pre-planned technique. Suckering in the opponent so to speak.