Off topic a bit, but this got me reading up on the Victor crescent wing. Compared to a B-47, the Victor had almost the same weight, wingspan parasitic drag and induced drag, but carried 50% greater wing area - giving greater payload and a 50,000ft ceiling.
Why then (apart from ease of engine maintenance) are all modern airliners similar in laylout to a B-47? Podded engines, swept back tapering wings?
Crescent winged, engines in the wing root Airbuses would carry more, at greater height for the same fuel economy.......
Even if you couldn't fit a hi bypass turbofan in the wing root, a podded engined crescent wing would still be more efficient and lighter than a Boeing B47/52/707/747 etc..........