Eutychus, you'll be surprised to find it's actually a legal requirement for all comunication between ATC and aircraft to be exclusively in English language at all busy European airports (more than 50,000 international IFR movements per year).
But of course, the regulators had their hands tied when nationalism won over common sense, and there is a provision for countries to conduct a safety study on risks associated with using two languages at the same time, which clearly there isn't any. The fact that places the likes of MAD, BCN and CDG have disproportionally high rate of TCAS RA events is probably just a pure coincidence, and in no doubt has
absolutely nothing to do with ATC shuffling two different languages, and moreover, situational awareness of all parties is
definitely not reduced by half of communication being in a language you don't understand. No problems there, whatsoever. It's also a pure coincidence that a lot of professional crews flying to those airports list ATC as the main threat during their departure/arrival briefings. Pure coincidence.
*Perhaps also; NPAs referenced to QNH should have DHs rather than DAs, i.e. a final decision reference based on the Rad Alt, height rather than the QNH altitude? The QNH can be mis-set by the pilots or ATC as we all know, but a Rad Alt of course measures the actual height above the ground and therefore is a more reliable reference.
In fact the last 2,500' of most NPAs could be referenced to height rather than altitude, which would add a little more precision and safety.
Generally a good idea, but I think it falls short when you consider that most Cat 2/3 approaches have very low minima (close to or at the runway), where terrain is generally flat. NPAs sometimes have quite high minima, over terrain that might be quite undulating, and it would be difficult to determine the accurate minima based on RA reading alone.
Perhaps the ATC's MSAW could be enhanced a bit more for NPAs, so if an aircraft crosses the FAF more than 100-200ft lower than the prescribed altitude, it would generate a warning while the aircraft is still quite far from terra firma.