If one agrees that landing accidents due to misjudged approaches are much more common than accidents following engine failures during approach, and if one further agrees that a powered approach is easier to judge and control than a glide approach, I think one should limit glide approaches to what is necessary for engine-out proficiency and let powered approaches be the normal procedure.
Excellent point. I've seen very few reports of accidents (particularly UK ones) due to engine failure on final: can anyone supply any examples?