Could have improved reports etc., in hindsight (10)
I believe the answer is:
retrospect
'hindsight' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for retrospect that I've seen before include "Look(ing) back" , "Contemplation of the past" , "A backward view" , "Hindsight" , "review" .)