Perhaps the reason that the Liberty hasn't (yet?) 'caught on in Europe' is that it only received European certification in June of this year?
Sorry I was under the impression that it had been certified earlier- obviously I was incorrect though. Even so it doesn't like grass and has a high landing speed and long take off run compared to current training types, which I would imagine would make it rather unpopular in the UK.
If it teaches pilots to fly at the correct approach speed and to land properly, then bring it on!
As for landing properly why not just make everyone learn on Cubs/Tigermoths if that is the line you're going to take.