The current lull in oil prices cannot be sustained. The house of Saud has dropped prices for personal political reasons, which will eventually have to bow to economic reality.
With this and the UAC widebody concept in the news... I have to wonder - are the Kremlin expecting a massive upswing in oil prices?
Same as the Joint Cargo Aircraft.
That fiasco should have seen USAF generals in jail.
Or that the US would not supply AMRAAM...
The question is really:
Can you cover the range of 500nm- 5000nm and 150-300 (2-class) seats with one wing design?
If the answer is yes, then your middle ground aim is a 200 seater...