Like unedited crossword, a good thing to have (5)
I believe the answer is:
asset
'a good thing to have' is the definition.
(I've seen this in another clue)
'like unedited crossword' is the wordplay.
'like' becomes 'as'.
'unedited crossword' becomes 'set' (I can't explain this - if you can you should give a lot more credence to this answer).
'as'+'set'='ASSET'
Can you help me to learn more?
(Other definitions for asset that I've seen before include "Something of value, worth having" , "A possession of some value" , "virtue" , "One bringing benefit" , "valuable sort" .)