Quote Jwscud:
I would welcome opinions and references as it is an area I could do to improve my knowledge on.
As I was looking in the FCTM for other reason, I remembered this thread.
Here you go:
FCTM:
Threshold height is a function of glide path angle and landing gear touchdown target. ...
Special attention must be given to establishing a final approach that assures safe threshold clearance and gear touchdown at least 1,000 feet down the runway.
Also:
FCTM:
When visual contact with the runway is established, maintain the glide path to the flare. Do not descend below the glide path.