We don't need them anymore.

[Shipp]

What drives player engagement is the ability to earn those rewards and not being told it's no longer possible to get them.
The carrot doesn't work if it's only a photograph.

Tell me you've never played MMOs before FFXIV without telling me.

The solution to this is to create brand new sets, or carrots, if you will. Not recycle old ones that people worked hard to get under the promise of them being exclusive and limited-time availability only.