Strange that you have to go to Tasmania to film it, it'd be better if they could just film at your place!
Just going to back up what many others have said, having the G1, movie and Animated/Classics version of the same character to show changes throughout the line.
Otherwise I'd through in a Car Robots character like Rail Racer, some Beast Wars characters (Tigerhawk, TM2 Megatron), an Alternator (Hound? He's fairly easy, and then you could also compare him to the Classics and G1 versions).
maybe an Animated Activator too, just to show that they are making figures for all ages as well.
I really want to be an idiot and say take some Turbomasters too (since they were banned from a US release) but they really wouldn't be the best figures to show off the Transformers brand. 
Oh and congratulations too!
Looking For: Wreckers Saga TPB Collection (with Requiem)