Best shift solution for Fuji X?
Have you consider cropping?
Sometimes, I just use my 16mm in portrait orientation and crop the bottom away.
You can use an even wider lens.
I do the same with the 10-24:
|Rainbow and Truck by dalgo|
|medieval woman with sword by summicron|
from Medieval Costumed Actors in Ancient Structures
|Yellow Slicker by Billstek|
from Just a touch of color.