It looks like nothing is holding you in Australia. The problem will be immigration. It is less the number of times you fly in and out but the duration of your stays. The safest way is one of the long stay visas.
We all know that Thai government representative have sometimes big dreams that will not amount to much in the end. Unless it is gazetted it is just talk.
when faced with options “A”, or “B” - Thailand usually opts for “C” … there is a lot of noise but little substance at this point … similar to the tourism tax that was eventually axed.