OK, so we have some people for it and some against it. Me, I see it as a good idea .
For people with long term beeding projects it is most likely already happening anyway to track pairings and development of desired traits (eg Waterrats comments throughout this topic). It may be that the information is not leaving the breeder, but to reduce the likelihood of unintended inbreeding down lines it would be good..
For "show" reptiles - I think this could come in as criteria for entry in the future. For "pet" animals- most probably not necessary as is the case for other animals (dogs, cats, etc.) as raised by Fugawi.
Should it be mandated - no. Should there be some attempt to get consistency in the information collected and reported if the buyer wants a certificated animal - yes.
Will someone in 20 years time thank those who do collect and make the information available as part of a study into australian reptiles; most likely yes. Hey, I even see adverts on TV for me to track my own genealogical lineage..... lucky someone filled in those certificates