I find the TAF3 worse than the TTF. I wish Oz would keep it simple and just put 2 hours validity on metar and atis like they do in SE Asia. Why confuse things, especially for international crew? I remember a course in Singapore for new training Captains and someone started talking about TTFs. Non Australians were ‘what the hell is she talking about?’. Now we have TAF 3s. Why?