marc,
true. there were a lot of us that were all playing by the rules as well and we did kick off the excess stragler or two.
I can add a lot more to that esp the one you listed.
as a variance on the one via kyogle - head out via nimbin -> Mw'bah back up via natural arch and up the freeway. that will give people MORE than their fair share of twisties. given I did that exact run in a fully laden van at a reasonable speed it was not that bad. it would not be one for the *track* cars with special needs but the weekender or daily drvier - yep!
again logistics would need to be applied to it and there would have to be an exec in each group with a 2way and a phone. I'd be up for a spot (helping to run it) as well.
another (two day affair) would be to Coffs ->dorrigo->armidale->stanthorpe (eat at Annas restuarant - wicked italian food!) then home to BNE. that once is scenery,twisties more scenery and great food before the trip home.
that would require a LOT of logistics to pull of 50+ cars but again doable.
some of the ones I did years ago were 40 or so cars and they went reasonably ok.
execs - feel free to get in contact with me