Slightly off topic, but what the heck was wrong with 'dive and drive' anyway?
When I started, yes- in public transport ops- this is how it was done, and I don't remember it ever causing anybody a problem.
IMHO, the CDFA is just another step in the dumbing down of flying.
This process permits ever poorer quality pilots to fly, and yet is touted as a 'good thing'.
One other advantage of dive and drive was that the GA was initiated from level flight.
The CDFA works well enough, especially on a/c with an FPA type flight director, but I liked D&D too.