Likeable.

It’s a hard truth in business, but likeable people go further than unlikeable ones do.  It doesn’t feel right to promote or reward someone who is unlikeable.

And being ‘likeable’ is subjective too.  If the right person likes you, then you are in a far better place than if the right person doesn’t like you.

On a technical competency assessment, there’s no line item for being likeable.  Someone who is technically excellent may very well be not very likeable. And asking them to become more likeable is like asking the CEO to design the interconnect piping for a new tie-in.