Well, perhaps if you are talking about flying machines with such unreliable engines, then you might have a point.
I'm not quite sure how a student can be permitted to fly his own aeroplane without holding a licence...?
Statistically, aircraft approved for SEP Class training are maintained to a high sufficiently high standard to make engine failure a very, very unlikely event. So to cover every possible contingency might take hours and hours of training before the student would be permitted to fly solo.
Nope, I'm still of the firm view that PFLs and steep turns should wait until after circuit consolidation has been completed.