As part of its "air bridge" Air Canada is already running 787 into the European and Asian gateways. Wonder if shifting from the 787 to 77W makes sense. Likely some increased fuel and cabin staff costs.

What is also interesting is when AC first go into the 77W it put in a 3x3x3 economy configuration. Someone at the time told me it was because the wanted the extra cargo capacity but were going to struggle to sell the extra seats. That changed along the way.