Wait, just so to get this clear.
Have you guys finished the unit 4 course already? And have you done enough checkpoints/unit 4 papers to get a feel of what the unit 4 exam is like?
I've finished Unit 4 and have done quite a bit of checkpoints/VCAA exams from pre-2008 that included all the equilibrium stuff, plus I've had a quick browse of current exams to get a taste of what they like to ask.
I can't speak for thushan, however I know he's completed the equivalent of Unit 4 stuff for IChO training - which he is currently jet-setting off as we speak!

(or at least soon haha)
But I think ultimately, this is more of a training run. The MC won't really have many tricks, but in saying that there also won't be the uncertainty in answers etc, they are all within the course and valuable to know/check your understanding...
Whether we produce a second is another thing, but I'll see how I go. If I come across questions which I feel are highly important, I'll take note and just add them to a collection. If I get enough to fill an exam, then another will be made, but it all depends on how much time and creativity we have left before exams
