pay,com.au at the moment is quite bare bones, no BPAY or ABA payments available yet
Looks like pay.com.au now do BPay. They've also introduced another feature (sometime between early October and mid November) where the transaction on my CC statement now shows up as the actual recipient rather than pay.com.au, which is rather handy. It does still show up with pay.com.au's suburb rather than the recipient's suburb, but I can live with that.
Eg. instead of saying "pay.com.au Elsternwick ELSTERNWICK AU", transactions may now show as "ATO ELSTERNWICK AU".