Lightning/Snow Event

[Ryuukishi]

What purpose is there to stop people from supporting the game at any point in time by allowing them to buy those items in the mog station? Not everyone insists that old items need to be brought back for free.

Well, there's an obvious reason for doing it this way. A limited time offer creates a sense of urgency. They want potential customers to think, "I had better subscribe right now to get that item!" Not, "I won't miss out on anything by waiting, so I'll subscribe in a few months, or maybe not at all because I'll forgot about it if I don't do it now."

For S-E it's incentive for people to subscribe sooner rather than later, and for players who participate, it's a little something for them to show off, that not everyone else has. Win-win.