Lightroom user since 2007. Fuji (16MP) user since 2013.
Color, contrast, and all the normal raw conversion parameters and adjustments work fine in Lightroom.
Lightroom (and presumably ACR) does just fine with Fuji X files with one exception:
Certain files that depend for their impact on the accurate rendering of tiny, random, fractal-like details, such as thousands of small tree leaves on the ground, millions of sharply defined blades of grass in a wideangle shot, or sharply-rendered jagged rock surfaces will show the peculiar deficiency of the Adobe raw conversion, but only upon extreme enlargement.
Repeat: Only under extreme enlargement. As in greater than an A2 size inkjet print.
For normal prints and web use, the odd detail rendering is not visible, period.
For the very few shots that may require it, the app Iridient Transformer X can be had for not much money. In ITX, the Fuji raw file is converted to a DNG, then Lightroom can do the rest in the normal fashion.
In general, the tiny detail issue is either not an issue, or less of an issue, in Iridient Developer, Photo Ninja, Capture One, and the built-in MacOS raw conversion, among others.
I have all of these, but use Lightroom for 99.9% of Fuji shots.