Lightroom added support for the Fuji XT-2 in June 2016 so if Fuji updated their profiles since then that may be the cause for the difference you are seeing with the profiles from Adobe to simulate the Fuji profiles.
I have not seen any indication that Adobe updates camera matching profile after support has been added.
The best place to post feature requests / bug reports is at the site you can access from the link below. This site is what Adobe's engineers monitor for these requests.
I don't see any difference resulting from the recent firmware. Or do you just mean that the firmware enabled bracketing with film simulation to save raw files?
Are you applying the Camera Calibration profile that matches the film simulation (see below)? What about the DR setting?
- jb-X-LR may help you match them
I think it's the fact that I shot with DR Auto
and LR isn't able to determine what DR setting the file has.
And there doesn't seem to be a way to see what DR was used in the EXIF.