Extremely desirable sort of editor (2,3,3)
I believe the answer is:
to die for
'extremely desirable' is the definition.
(something to die for is extremely desirable)
'sort of editor' is the wordplay.
'sort' is an anagram indicator.
'of'+'editor'='ofeditor'
'ofeditor' is an anagram of 'TO-DIE-FOR'.
(Other definitions for to die for that I've seen before include "Highly desirable or alluring" , "hot" , "Superb" , "Extremely desirable (colloq.)" .)