Limited Category operators are already making their feelings known about the ridiculous fuel reserve proposal. You can write (postage free) to
Reply Paid 2005
Standards Documentation Coordinator
CASA's Standards Development and Quality Assurance Branch
Canberra, ACT 2601
It has significant implications for Yak 52 and jet operators and warbirds transiting to air shows. To my knowledge, no Limited Category aircraft in Australia has ever had an issue with insufficient fuel reserves.
It's just one battle after another with these idiots.