The only relevant thing IMO is that Deckard is a HUMAN for P.K.Dick in Do Androids
What Scott did in his DC (thank god not in the official movie)is kind of like making a Romeo & Juliet movie and getting Juliet to dump Romeo and run away with Thelma
The little "hints" are just to make you suspicious about the whole story, plus they make you think about what's humanity... but that's it...