I'm flying the 752 IAD -> IAH 5/1/2017. It's been really interesting watching 1st fill up. I had originally picked 2B because Seatguru didn't show any difference, then I got here and found out the row 1 footwells are larger, so I moved up to 1E. Apparently no one else knows that, because they're filling up the last 3 rows first. It's an afternoon flight, so I wouldn't imagine sleep is a major concern. It's making me paranoid there's something about first I'm missing. Can anyone confirm this layout has bigger footwells in row 1?