I'm okay with this but think they should make an exception to the 24 hour policy for flight delays and cancellations (I'd argue that this exception should even apply to full credit card pre-pays like CRT and dinner shows).
In order to qualify for the exception, they could require you to book the ADR for at least 3 hours after the scheduled flight arrival time. You would be required to provide the flight number, length of delay (or time of actual arrival), and some sort of proof (e.g., boarding pass) that you were on the flight.
If this became widely abused (or too onerous for Disney to administer), they could limit the exception to onsite guests using Magical Express (and market as a "perk" for staying on site).
In order to qualify for the exception, they could require you to book the ADR for at least 3 hours after the scheduled flight arrival time. You would be required to provide the flight number, length of delay (or time of actual arrival), and some sort of proof (e.g., boarding pass) that you were on the flight.
If this became widely abused (or too onerous for Disney to administer), they could limit the exception to onsite guests using Magical Express (and market as a "perk" for staying on site).