Monarch Scheduled, a British leisure airline, has a pretty cool feature on its website: For an extra GBP15 ($27), you can upgrade yourself to a seat with 6 inches more legroom. Fantastic, right? Shouldn’t United do this with Economy Plus? Shouldn’t a US airline at least test this on one aircraft? I should tell you, though, that Monarch Scheduled’s regular coach seats have an inhumane 28" of pitch (no US airline even has 29"), so that $27 is an even better deal.