User blog comment:Ygrain/Revisited: EDI and her purpose in the story/@comment-5287758-20121215162931/@comment-2228120-20121215173338

Shepard, who is basically a walking corpse at that moment, definitely wouldn't come up with the idea but EDI herself might :-)

I'm not going to press this any further but with the amount of rather inexplicable things in the ending, one more would hardly be a problem.