The big nasty that so far hasn't been mentioned in all these articles will also be points expiry is coming, previously CommBank Awards didn't expire if the card is open, CommBank Yello points will expire if no activity over 2 years.
"Your Points expire two (2) calendar years from the date you last:
(a) earned Points (for example, from using your CommBank Yello Earn Card); or
(b) redeemed Points (for example, to redeem a Reward), whichever is later.
Each time you earn or redeem Points during the 2-year period, the expiry period resets and a new 2-year period commences from that later date.
If you do not earn or redeem Points to reset the expiry period, your Points will be forfeited without notice once the 2-year period ends"