See youtube https://youtu.be/MvekG31FbJM?t=9 for an artists conception of the seating layout.
Not that these are deal breakers, but it's generally safe to assume that at least economy passenger experiences are going to get worse, not better.
In case of a crash, the seats will move forward and then spring back, if you have your body in between of the two seats in front of you while they do this, you can easily get crushed.
e.g. Billy Mays