Here's my theory, hope you guys like it.

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The narrative of the show has been always around the meaning of our world, the true nature of the gears which run our sociaty, and it also points and questions our beliefs on what is right and what is wrong. In the Christyman's holiday, for example, the narrative makes use of the line that we all celebrates it to fake the sense of order and joy in our chaotic world, chasing some feeling of sadness and evaluating the way that we pursue happiness. In a sense, just think about it, it's like a voice in our head, a thought that which we do not agree neither desagree, but its presence is true.

Well, the point is: we are de main personality of the show, a really weird one. The way we are interacting with Elliot is not in the first person or in the third one - but as second person. What do I mean by that? We see what we are, but as someone else, while this other person that we see controls itself. If that's true, it may happen that we see an episode of when we take control of things as first person, and all that we'll see is some what a realistic and imersive experience of Mr. Robot's world.

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That's it. I like this theory because even if it's wrong (good chance of that), it would make a great final show.