This is the "issue" with single focal length lenses, they aren't perfect for everything. I know some say that's a good thing as it forces you to look for a different angle, which is true some of the time, but at other times you just do really need a different focal length to get the shot you want/envisage.
Of course with the 18mm there'll be times when you wish you had more reach, however in this situation you can obviously just crop (within reason). With a longer lens you can always stitch images if you need a wider view, but that's only OK if you have a static scene, and I've never been able to take a shot like this without introducing paralax errors.
There's always the option of using the wide angle converter to the X100, but that's also a bit of a faff it would mean removing the lens hood and filter everytime I wanted to use the adapter.
I'm still looking for the Holy Grail, but for the most part I do enjoy using the X100VI.