Part of the problem is that the seats are made to lean back. If you sit up and not lean then it defeats the purpose of even having a hard-back seat. They simply are too big. Virtually impossible for someone to walk by if these seats are back-back...at least not without shoving the person seated...
Absolutely horrible especially when seats are in front of each other! I'm a bit less then 6' and my knees got destroyed and cut-up because the plastic backs have sharp plastic edges. There is simply no room to sit. What a horrible idea.... something needs to be done ASAP!