Beags
When we have a unified ATC system outside of controlled airspace instead of lots of different units then we too will be the same as the US - until that time the system we have is the best you'll get I'm afraid as it shows who's working what. It's the old 'dosh' problem I'm afraid.
Once upon a time what you said would be true (I once worked with a radar with a 15 second scan rate) but those days are long gone and I refer the honourable gentleman to my previous answers.
CM