Tower: A direct answer:
If any of us were able to see into the future like you ask, we'd spend a quid on a Euromillions lottery ticket, win £85million, turn Aldergone into a car park, then extend the runway at BHD to 5 miles, having bribed a bible-bashing nutter politician (I'm sure there's at least one left even post-Iris), under the proviso that Flybe do a twice daily Gatwick, plus a once daily to an airport of our collective choosing, all from Derry. That do?