G'day. I've been listening to all the carry on as well.

I guess if you're an active trader with a transaction trail they could be able to build a history of your financial gains from exchanges.
Would overseas exchanges provide that information to the ATO?

How are they going to deal with the HODLers?
For example: if somebody bought 5k of cryptos 2 years ago and have not converted any back to AUD then there has been no gain (even though it might be worth 30k now).
What happens if all the cryptos are kept offline and only used for spending? (no gain)
What happens if the individual takes the hardware wallet overseas on their holiday and uses it for spending money in the local currencies of the countries they visit?
What happens if it's used over time as a supplement to retirement funds or the pension?
etc.........
Good luck with that ATO!!!

Anyway, if the whole Crypto thing goes according to plan, there won't be Central Banks or Governments to worry about!
Viva La Revolution.....Lol