I concur with Shaggy Sheep - see also Harvey Plourde's excellent book 'The Compleat (sic) Taildragger Pilot' for an explanation of why taildraggers are more demanding than trikes...
I don't think that teaching everyone on taildraggers is the answer to sorting out landing techniques though. If instructors taught landings well and didn't accept sloppy technique, shouldn't matter where the wheels are on the aircraft.