Tradeskills?
Every holiday that requires BGs as part of the achievement inevitably gets a flood of complaints about that aspect, yet no one seems to mind the requirement for rare or high level tradeskill components.
Take Children's Week for example - one of the cakes you needed could only be made as a rare drop from the fishing daily. The cakes didn't fall under 50g each on my server (although the mage royal used in them was by far the worse gouge going for 20g each for a time due to one guy temporarily cornering the market) and they were going for an easy 200g for the first 12 hours, then around 100g for the next 24 until competition drove it down to the 50ish range (and they were selling too).
Or how's about Thanksgiving - that required some pretty hefty cooking skills to complete and I know a lot of players dismiss cooking, even with the utility of fish feasts and what-not?
Personally, at least for things like the cake, I know I'd be outraged having Blizz put my achievement in the hands of someone elses' profit margins due to the rarity of the recipe drop.
Yet not a peep?

