Certainly, news content has been very important here and most discussions here are prompted by news stories. So on the one hand moving most news content to c/news might strip the Australia community of much interaction, but on the other hand since these are still relatively early days, it might be easier to do it sooner rather than later.

But as you said, since their aren’t many people on here posting original content, opinions or questions I would say that opinion pieces or seeking discussion of larger issues would be welcome in the Australia community. For example:

• Foreign interference through social media is an active threat. Here’s what Australia can do
• Why are so many boys and men feeling alone and in the cold?
• Families distressed after ‘highly misleading’ video used by anti-Voice campaigners goes viral

Would all be on-topic for c/australia. But:

• Burger giant Wendy’s signs deal to open 200 Australian stores by 2034
• These Australians are happy to get on their hobby horses — and they’re keen for others to do the same
• Australian government lifts humanitarian intake cap to 20,000 visas
• Mushroom mystery: family lunch leaves Australian town reeling after three deaths in suspected poisoning

would be more on-topic in c/news and/or Australian Politics.

I brought up political content in c/australia in a comment on this post, however the OP was concerned that if we split off into niches the community might not grow as well. I’m thinking of doing a sticky post to invite discussion over there on this topic and perhaps follow it up with a poll to see where everyone else sits.

EDIT: probably should have previewed the formatting first