Not commenting on the 330 replacement beyond unless crew training is provided by Boeing gratis then replacing the existing 330s with B7x7s seems mad. Do newer 330s have higher MTOWs allowing ORD with IFE?
Agree with ORK-LHR - always seems jammed. 321 ex SNN a few months back was full, and that's winter. IMHO all LHR flights should be 321 to get full value for slots.
330 ORK-LHR - seems hard to justify on a reg. basis since EI 330s probably have high rotations as it is with SNN and all.
319LR - AC are using it for South America route proving, that's where they see future shekels. However, that's for long thin routes where existing connections are onerous (i.e. via US) since the slower 319 is outpaced by bigger a/c like 767, 330, 744.