Back to the original topic...
Now that YYC-LHR and YYC-NRT will be on B787, I don't see YYC-OGG returning next fall on Mainline as YYC-OGG rotates off YYC-LHR / YYC-NRT and both YYC-LHR / YYC-NRT are switching to B787 and I don't see YYC-OGG going to a B787.
Perhaps YYC-OGG can rotate off rouge YVR-OGG; otherwise, YYC-OGG could disappear altogether if the economy keeps going downhill...