Why do Seasonal Events get stripped down each year and not added too?

[Blood_Blossoms]

This has bugged me for some time with Seasonal events mostly in last 5-6 years so to say as early on you don't tend to notice it to much as your new.
But why is it seasonal events get watered down each time and not added to it be cool if the seasonal events grew with its old content. instead of removing the old content, EG Fates , Minnie games , jump puzzles. so always something fun to do on top the new content and lets old players experience older content even if it don't give last seasonal events items from last year but counts to this seasonal events.

as currently you get one/two quest line and 1 fate and you instantly get all rewords.
Just be nice to say do multiple fates from years before jump puzzles from the years before and the new Qwest line all in once zone. It just adds lot more content.

I don't know if this been talked about as I don't come here often to comment but yeah just something that's bugged me. I do know some years they bring back the costa dell sol jump puzzle mostly as high demand and personally I think it should say or added to its a fun thing to do once a year.

Sorry for English.