OK, what you are proposing is different from what I thought you were saying, and I didn't realize what aircraft type(s) you were planning on.
You say "near the ground is the most dangerous part of the flight." I will add that near the ground is where precision flight control is practiced and learned. That is the reason ground reference maneuvers and various types of takeoffs and landings are included in the syllabus.
Ground reference is indeed nearer the ground than most flying in conventional aircraft, but still usually 500 feet or higher, but the "near the ground" I was talking about is within 100-300 feet. It's still dangerous even for ultralights, but not as much as for more conventional craft.

On the other hand, I have trouble conceiving of single seat training from scratch, so I'll butt out now.