The transparency register for foreign agents in Australian is large, long and extensive. It's certainly not China-specific, so it includes hundreds of individuals and entities involved in many relationships around the world.
One argument could be made that this has, therefore, not been very effective because it often captures relationships that actually have no strategic significance. On the other hand, it demonstrates that the Australian government is country-agnostic and that this is not about discriminating against China; it's simply about applying equal rules to all.
I think the law or the register has been moderately successful. I don't think it's been an incredible success, but it's been successful enough in tandem with the laws criminalizing foreign interference and all of the other pieces of the architecture.
Most interestingly, part of the deterrent effect of the register is that it's fair to assume that a number of individuals in fact ended their formal involvement in the China relationship or their formal involvement with institutions that had links with the PRC before the register came into force. That in itself has been a positive outcome.