It seems that if there was some kind of reset, everyone except for Kaworu (and by extension, SEELE, possibly) has forgotten what happened over the course of the series.
Perhaps the reason that everything is playing out mostly the same again is that, well, it's the same people in the EXACT same situations. Let's say, for example, that you are crossing the street one night, and you're hit by a car. Now, if you could redo that night over again with that knowledge in mind, you would avoid crossing the street, or simply not leave the house. But if you were put in the same situation without any memories of it, you would probably cross the street at the same spot.
So yeah, if there was a mass reset that goes back to when the first Angel attacked, and it has the same people and situations, they would probably act the same.
People like Kaworu and anyone else who know of this "reset" might start making changes. Hence, there is at least one new character that we know of, there's new Evas, and there's some new situations coming up in the new movies.