I think .com.au will always be king of the .au 2LD landscape. However, the idea behind blog.au is to perhaps give people the opportunity to register domains without needing to have an ABN or ACN etc.... Yes you can register an id.au without an ABN, but the domain name must relate to your personal name. You can't register domainer.id.au, but you could register domainer.blog.au and put up a blog site...
If you think about it, not everyone is eligible to register a com.au. What about the guy that just wants a domain names to host a site about his hobby or blog?
Do we introduce blog.au for bloggers and then police domain names to make sure blog sites have blog content? Or, do we reopen .info.au without any policy restrictions for people that do not meet current .au policies. Info.au would cover blogging too?
Do we reopen conf.au and keep that space going, or do we replace it with something more recognizable such as event.au? Or are conferences already covered under the current .au structure. I think most conference operators will have an ACN or ABN, so they can have a com.au anyhow...
These are just some of the questions that the panel is trying to make sure are addressed and all communities are given fair representation.
George