Thanks very much for this! I do both trackdays and drifting at Mallala regularly and have been longing for an AC version I can practice on (even made a really rough version myself).
I'd have to agree with GT VIRUS about elevation and track width. To me the elevation is more off than the width and quite is substantial. As mentioned before it is VERY flat with a few bumps in key areas (like apex at T1 and a compression coming out of the last corner).
Other than that I'm mostly missing a few key curbs around the place, and some tarmac on the left at the pit exit and something about going into T2, T3 and into "the esses" doesn't feel quite familiar but I only gave it a quick go this morning. Will do some more extensive testing a bit later.
I've got plenty of video footage with a solid mounted camera in a small car very sensible to bumps that might provide some reference. Also more than happy to help out with feedback as I'd love to get this track as good as it can be for selfish reasons.
Donated you some gold as well for the hard work. Keep it up!
Cheers!