I would point to friend, in a perfect world (7)
I believe the answer is:
ideally
'in a perfect world' is the definition.
(I've seen this before)
'i would point to friend' is the wordplay.
'i would' becomes 'id'.
'point' becomes 'e' (E is an example).
'to friend' becomes 'ally' (I've seen this before).
'id'+'e'+'ally'='IDEALLY'
(Other definitions for ideally that I've seen before include "In the best possible way or circumstances" , "for best results" , "for preference" , "In the perfect case" , "in theory" .)