Good to hear. I have a lot of ideas for the domain content. I think the comments by some that all .net.au is worthless is way off the mark.
I've sold maybe a dozen .net.au's over a period of 4-5 years. Only two of those sales have produced decent returns (low $X,XXX), and the other's have been lucky to pass the $200 mark. One of the sales was because I sold an established website with the domain, and the other was because I got lucky (I don't think I could achieve the same result today).
I've since droppped probably 2 dozen other .net.au's in the last 18 months, as I no longer see value in them and I can't see myself buying any more.
You asked why Drop wouldn't be interested in the name, and the stark reality is that in most peoples opinion .net.au's just aren't that good.
Also, it's a common scenario that "newbies" come on DNT thinking their domains and red hot, and then get brought back down to earth. There is only so much we can sugar coat things..
I hope that you will stick around, learn and contribute.