I know that we haven't even had SIFAS for a month, but I really hope they don't choose to put limited cards/gachas. Or if they do, that in the near future they give us a way to obtain the cards from previous gachas. Because if, for example, someone joins the game next year and wants to have the Kotori or You from the first event or the complete set of Snow Hallation, it will hurt to know that it will be impossible because the cards "disapears" once the gacha expires