Very OT, but my first thought was how much money FR, U2, Wizz save by never having crew layovers and always flying back to the base (but still offering sensible options; I know 6.30 am departure from STN is not convenient but makes sense
).
Funny enough there are low costs that definitely do crew layovers, e.g. JQ, WS, WN, B6.
Surely this gives BA competitive advantage.
Who wants to go from Luton at 6am when you can go from Heathrow at 4pm for £30 more?