055166k, We (in France) are aware of that particularity too, the incident I mention was mostly due to the callsign confusion, the fact that the pilot didn't mention the descent removed a slice of cheese.
When I want the pilot to stay at his cleared and steady level, I don't mention the level at all, not even "maintain".
Most of my welcome messages are "Bonjour, identified".
I suspect that "Bonjour" is not really phraseo-correct (not recommanded by ICAO, even though useful for HF, I reckon) and that "identified" doesn't mean anything...
My aim is that the pilot "proceeds as cleared by previous controller, until further notice" and "identfied" seems to work...