Well, as far as crash safety, I would think it would almost always safer to be facing backwards. That’s the way infant car seats are. Facing backward would mean your whole body would absorb the inertia change against the seat and your head would be supported. Better than seat belt bruises and a bobble head imitation, seems like.

That’s assuming the forward facing people in the back row are buckled of course. 60 mph headbutt would be…bad. Turn those seats around too maybe?