I'm not sure I understand. It sounds like you're saying you don't like the leg room being so cramped that beyond a certain height you're physically required to angle your knees into a neighboring seat's space. That's surely part of the charm though?
It's bad enough when I have to fight for elbow room with the people next to me. It's a whole 'nother experience to fight for the elbow room of the people in front of me to have a place to put my knees.