Well the things is they decided to do an anime and not another game. Which is understandable s playing the games took a while, due to the amount of narrative. But they probably had to acrifice somethings in order to get closure.
Not to mention the anime was ment to be more serious than the games, s well, taking on a more grim feature than the psychopopness of the original 2 games.
I'm watching the anime for closure, not much else.