Connectivity
Lenovo belongs to the last manufacturers keeping the outdated VGA-out. So, users do not need to take additional adapters with them in case an older projector might still require this interface. However, you're better off connecting modern flat screens via Mini DisplayPort, which is capable of 60 Hz at 3840x2160 pixels. Previously, this only worked with computers with dedicated Nvidia GPUs, while the refresh rate had to be decreased to 30 Hz for all others. It's a pity that the ThinkPad does not feature a second digital video-out like HDMI.

Keyboard
The evaluation of the keyboard quality will never be absolutely objective. Personal preferences are decisive in some aspects. Nevertheless, good input devices have to meet certain criteria: build quality and stability, precision of the stroke, key travel, and layout.
The spill-resistant ThinkPad keyboard performs top in almost all aspects. None of its competitors bring such a rich mechanical feedback to each stroke, which is especially due to the pressure point being firm and the key travel longer than usual.