Hello Skip,
No, I'm a new Fuji user. From what I've read however, I had an X-T2 to begin with, it isn't likely I'd upgrade, unless I was using the camera for video recording, in which case, I may have wanted the 4K. As a still photographer though, I don't see a huge benefit to the upgrade. If I were you, I'd just invest in more glass!
Cheers,
Luna