Onan, that is what I thought as well. However when I was with the Marshal Service we decided to turn some of the seats around so the guards could better watch the prisoners on takeoffs and landings. So like a typical government agency we went ahead and tried to turn the seats around, well guess what, you can't just turn them around. (The FAA got real upset with us, not that they could have done a lot about it however.
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With rear facing seats the the bracing for G loading is entirely different and the seats heavier due to the additional framework and more expensive due to the additional metal brackets needed for a body's G loading spread over the entire back rest of the seat.
That is probably why all of Southwest Airlines new aircraft have done away with the club style seating arrangement that was installed on the older aircraft. (Now that is just a guess about Southwest mind you.)