Mapleflot does operate 777's and 787's. The 767 is a great airplane that will be around as long as oil prices are low. What did WestJet recently do? Brought 4 767-300's into the...
The 787 is a great 767 replacement. What Boeing really needs is a 757 replacement. The A321neo is still not as capable as the 757 and never will be.