Right there with you. Still waiting for them to finally let me reassign this strange red button on the top... can't remember that I ever used it. Does it have a function?
Okay, jokes aside, I installed FW4 a few days after its release but don't care much about it. The "eye" feature of face detect might come in handy one day, but at the moment, my "old" method still works faster. Besides that, little has changed for me. I don't do sports or fast moving stuff, so I work 99.9% in "S" drive with AF-S (that's why I seriously love the "lock" feature that came with one of the FW-updates).
For me, the X-T1 already had way more features than I needed to begin with, but new options are always nice to have (as long as they allow me to still use the camera in the way I'm used to). Focus&Spot metering interlock was a godsend. So was MS+ES because it pretty much makes accidentally NOT capturing a RAW impossible.
And yes, new features make things more complicated, especially when they are forced into an old UI (as Rico mentioned). But that's the price you pay for allowing the people who do not care about the new features to keep using the camera the way they used to. If there was something new I cared about, I reread the manual, if not, I didn't have to. That's a good thing. Because seriously, I read the manual once when I got the camera to set it up in a way that it behaves as I want it, and from there on it was aperture, shutter speed, ISO and my Fn-Buttons. Sometimes the Q menu, becoming able to costumize it was also a good thing.
In the end, for me, a camera is always just a tool that allows me to capture my vision of a scene. And it should do so in the least hindering way.