It's an ambit claim: unless RAAus propose to 'takeover' all 'recreational' aviation up to 1500kgs, and also the pilot licencing up to RPL, but that is probably a bridge too far.
Popular opinion is that 760kg would be useful, as it would cover more of the lower weight GA types, and would allow some upwards progression of MTOW for many modern types currently sitting at 600 in RAAus, but which can be registered in VH- at 700kg.
I couldn't comment on the 'good' or 'bad' of it as it all depends on how CASA will decide to administer the lower weight sector of aviation. Who would be prepared to make that call?
happy days,