To be honest, I'd prefer that the development team used their resources on creating new stuff for upcoming patches (like new armors, dungeons, primal battles) than waste time on events that will be over in 2 weeks.
GW2 has a separate crew entirely dedicated on creating that type of content, that's why they can afford to do some big events.

While I would like to see more interesting events too you have to see the bigger picture here, with all the problems they had at launch and the recurring bugs appearing every patch, I think they have their hands full at the moment trying to set things right and working.