I got an X1 about a year ago because I thought it would be a satisfactory replacement for an X220. The screen, sound and battery life are definitely big improvements, but the Trackpoint never worked well and the ridiculously thin keyboard was a real disappointment. When a few keys stopped working (after ~ 1 year), I improvised with a wireless Mac keyboard. It would be nice to get the keyboard working but it looks like that involves many tricky steps and very tiny screws and I resent having to fix something that is not pleasing to begin with.
I realized that the X1's great display, battery life and keyboard didn't make me as happy as the X220's amazing keyboard and operational Trackpoint. So I found a replacement battery which looked like it wouldn't catch on fire and I'm back to the X220. My new adventure is figuring out how to move Office 2019 from the old computer to the new one.