I hope she doesn't release any new material this year nor the next.
I wish she'd focus on performing lesser known songs. Songs that she rarely performed live before.
But if she had to release something, then I wish it'd be a complete revamp of her songs. And I mean with new vocals. Turning ballads into rock songs and upbeat songs into ballads. With good MVs matching the new concepts.
A perfect example of this would be what Utada did with "Distance":