I don't know man, it seems to me that those events are pretty simple. All they had to do is get the team that works on gear to make some swimsuit models and someone else to write (or even copy) a few lines of code for the quest. I'm sure the team that works on gear couldn't help much with creating an AH anyway. Id be willing to bet that most of the seasonal events were complete or close to it before the game even launched. Also, I'd bet that the UI team is working on overhauling the UI. That's more important to me than making the wards easier to use.