If i could just make a few comments on this. One of the important aspects of beginner/novice/bronze syllabii is that it ensures that dancers develop skills in a range of fundamental movements. The DRS is tricky for a beginner to master, but we all went through this as part of technique development. A good teacher will know if the pupils have mastered it well enough for a competition, and also whether the movement suits the couple. Remember nobody dances every figure 'perfectly'.
I still use it (as a pre-champ dancer) in foxtrot, but not all the time. It also can be fun to dance socially, since it takes up little space.