You are absolutely right Norm.
Another more effective, albeit a tad drastic solution would probably generate even better results. Have someone on every flight a guy from Brooklyn with a name along the lines of Vincent "Vinnie the Beast" whose job would be to break both the offender's knees with a baseball bat. Betcha' if they did that one time, everyone on a every airplane in the world would sit there straight up as if they were in a Church pew!
As for suing, when was the last time anybody you ever knew successfully sued anyone associated with "The Outfit." Picture that!