Nicer person who'd got a more efficient job done on the post (6,4)

I believe the answer is:

better sort

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'who'd got a more efficient job done on the post' is the definition.
I know nothing about this answer so I can't judge whether this works.

'nicer person' is the wordplay.
'nicer' becomes 'better' (I can't justify this - if you can you should believe this answer much more).
'person' becomes 'sort' (sort can mean a person or character).
'better'+'sort'='BETTER SORT'

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