To be honest I think the whole system in Australia is a bit messed up. We have a situation where someone with a PPL can fly a GA registered Jabiru, but not an RAA one - and vice versa. The plane doesn't handle any differently if it has numbers or letters on the side, so why do we restrict who flys it?
One viewpoint is that a GA registered Tecnam is safer (better maintained, possibly more instruments etc) then an RAA one. It certainly isn't harder to fly. Yet the current system stops people with an RAA license flying the better maintained, safer aircraft. What's the logic in that?
Why not let suitably trained people fly whatever they want, just as long as it's in the weight and stall speed limits?
It's crazy how we can have the same aircraft registered as pure GA, GFA, or RAA - or trikes either HGFA or RAA. In each case you must be a member of the governing body to fly that aircraft. In my case, I'd like to glide AND fly ultralights, but I'd pay 2 lots of fees for 2 bodies to do largely the same thing.
I kind of like the UK's 'NPPL' - see NPPL - it's a government license that lets you fly simple aircraft up to 2000kg, with no medical and a maximum of 3 passengers. I think the training requirements are like ours, once you factor in the minimum cross-country hours.
The USA has a 'Sport Pilot' license - see Pilot certification in the United States - Wikipedia, the free encyclopedia - this is very close to ours, except that you can ALSO fly light aircraft that existed before the LSA regulations came into being - such a cubs, ercoups etc. You can also add controlled airspace endorsements.
Canada has a 'Recreational Pilot Permit' - see Flight Training School, Recreational Pilot Permit Licence, RPP, Prince George, BC, Canada- that takes 25 hours minimum. You can fly 4 seaters, but only 1 passenger.
The current Australian system has resulted in lots of little aviation fiefdoms which restrict pilots but don't always improve safety.