"On runways served with an electronic glideslope, maintain on or above the glidepath until transitioning to flare."
Any opinions?
Since you asked.
A threshold crossing heigt of 50 feet on a 3 degree glide slope puts the Battle of Hastings (1066 ft of runway) behind the aircraft at the touchdown point with no flare. Note that this figure assumes holding a constant sink rate, say about 700fpm to impact - more of an arrival than a landing.
The heavy dinosaur I flew was best handled under certain circumstances by being one dot low on GS with no more speed than Ref (and hopefully slowly decaying) when crossing the threshold. True, it isn't written that way in the book but it's equally true that short slippery runways are just one example in which following the book will get you into trouble.
Holding the GS at Ref +5 isn't always the best strategy.