I like it but how about some other easy random wins that don't effect required space but due increase user experience.

A vertical tray that comes out under the arm rest to prevent "man spreading" of legs & allows both passengers to rest their leg against without awkward leg touching.

Get rid of the reclining seats. They piss off whoever is behind them. It screws with their video & trays. I don't even need to mention the poor person's knees if they're above average height.