I reckon memorising essays for the extended response isnt too hard. If you look at the '01 and '02 HSC papers you can spot a trend. Though it may be different now since they decided to test the global part in the business report. But if not its all a matter of putting two parts together.
The first is usually something like 'outline/describe the methods/drivers/reasons of global expansion'.
The second part is 'evaluate/critically analyse the marketing/ER strategies used in global business'.
So if you memorise part of an essay for the methods, drivers and reasons for globalisation as well as for the marketing and ER strategies. Then when the question comes up, you just put the two relevant parts together.
I guess you will need to have a good memory to do this, but even memorising the essay as points will work. Well it worked for me in our trial, and i went well
With the new format they seem to be adopting it may be harder than that because the question could come from anywhere in the syllabus, not just related to global business.