Klauss - I think you are making this over-complicated - as you will see (we actually all agree! - is this a PPRUne record?) - it is the simplest form of instrument approach you can fly. As long as our Magenta line/FD fed youth can actually fly pitch and power, you just do as you are told. No interpretation of needles -all done for you.
When you arrive at 200/550 there is no difference to you as a pilot to 200/550 on an ILS.
My thoughts on your link? Lack of 'spatial awareness' aka airmanship - the same thing that makes people fly into mountains and land in BRU instead of FFT or was it the other way round?