I feel like terminal E can get clogged at peak times in the evening flights to Europe. I know getting customs in A is a high hurdle, but do you think given the excess capacity we could eventually see it used by a foreign airline for some departures?
Thanks to pre-clearance, Aer Lingus is expected to move to Terminal C sometime soon(naturally right after they finished doing over their lounge in E). That's two to three always packed flights right there. The problem with moving other carriers into Terminal A is that the gate layout isn't optimized for larger jets. With Air France and Alitalia operating there, they'd have to close off adjacent gates to accomodate them.