This time last year, there was the online booking bonus, as well as the double/ triple miles offer. In terms of value for miles, it looks like its definitely going to be lower over the next 12 months.

Mileage accelerator in my experience so far, has been quite disappointing. At least on the routes I've been flying, there have been little or no bonuses. It doesn't matter how many miles this actually is - it is at least a 20% devaluation. And 33,000 miles is a fair amount I think.