I never understood why laptops brands have so many SKUs and change chassis design on every generation. When I compare both internally and externally my personal thinkpad from 2019 to the one my company is providing me since last june, I don't see any outstanding difference that justify having incompatible mainboard, keyboard, trackpad, screen, hinges or even fans. It looks like they change the layout and parts dimensions for the sake of changing it.

Dissapointing. The X220 is built well and has a great keyboard. Any idea why the focus on the X200/201 instead of the X220/230?