This is the future!!
It will be Tango to the places and times when there is no need for a business cabin. This will include all of the Maritimes, most flights to the Prairies and a bunch of the transcons. The only J seats will fly on the three-to-three and overseas positioning flights.
I wonder why AC can get 80% to buy Tango over the internet, but not their other offerings? But, since it works they will keep at it.