I could have sworn I mentioned this in here, but in terms of the WHY of those two returning, it boils down to this:
Shinji: Rejects Instrumenality: Will to live on. ("For the sake of who I am, I will be myself."/"But maybe I could learn to like myself. Maybe my life could have greater value.")
Asuka: Has the will to live, so she returns after Shinji rejects that. ("I don't wanna die, I don't wanna die, I don't wanna die..."/"I don't want to die. I don't want to disappear!"/"So, I live alone. But I don't want that! It's painful! I don't wanna be alone...I don't wanna be alone...I don't wanna be alone!")
Mmmkay?
Speaking of the stupid theory, just yesterday I stumbled across a anime blog of a fan who rambled about how great Eva is and mentioning a little about being excited about Rebuild. However, he (I'm assuming) stated that he thinks the final scene is Rei-Asuka, a hybrid of the two. :shock:
I attempted to somewhat enlighten him, of course. But a hybrid?
Asuka: "What the hell? Do I look like a car or something like that to you?! *dent*
German model...?"
*looks down at sig.* It's blue eyes alright. I just don't get it. *sigh* Is it just because of the bandages that people think such silliness? It's from her battle with the harpies, people! It's not that hard to notice!