Hmm, this is how I understand seasonal stuff working: get it from seasonal event? Seasonal event item.
Any random mogstation bell or whistle? Mogstation bell/whistle, got nothing to do with seasonal event items.
Does having the mount to be Spriggan make it easter item? I don't think so maybe.
SB brought us fantasy world asia in form or Doma and Hingashi and Steppe and etcetc. We also saw some formerly China/Korea only very asia themed glamours put into Mogstation. Should they have placed even one of those glamours into game just because we were in middle of fantasy asia expansion?
Hmm, ya know what, maybe. Would not have minded at least one set to be purchasable with achievement points.

Funny enough, only think I would have rather seen in game was the dances. This is second time we get random silly dances put into Mogstation. Can we bring some back to Gold Saucer, pls?