Really looking forward to seeing what additional routes they will announce for summer 2022 on the Dreamliner. With 10 in the fleet by next summer, there should be a few route announcements coming...
Right now, I'd say that there is enough utilization for only seven 787s
YYC/YYZ/YVR-LGW (1 each, 3 total)
YYC-CDG (1)
YYC-DUB/FCO (1)
YYC-YYZ (1)
YYZ-BCN (0.5-1, only 3x weekly)
If YYC-AMS returns, that would leave 2 787s remaining
YVR-YYZ is not only the 787 schedule as of now for S22