You don't seem to have understood the root (heh) of the criticism. The point wasn't that there should be root; the point was that it was cut abruptly as if the Doomguy's eyes were under the sole of his shoes.
So now you've added some roots, but they still get cut abruptly all at the same level; and it still looks flat.
The idea is to take volume by having the parts that are below the eye lines and in front of the player go forward by going downward. The parts that go off to the side get cut a bit earlier (they don't drop as much below the floor line). This gives volume to the sprite.
Again, this picture illustrates it well: