Yup, one preseason game is enough anyways, the NFL is looking at going to 2 because of injuries, someone on an NFL broadcast basically said preseason games are like high-end scrimmages anyways. Maybe the quality of play won't be as good as if you had 2 preseason games, in the early going, but at least season ticket holders are paying more for regular season games that count.
One problem Montreal might have is staying sharp mentally though once they are guarranteed 1st place in the east, this could be a problem for them.
An all West Grey Cup does look possible now. Lets give Winnipeg second place. If Saskatchewan crosses over, no time zone change. If Edmonton crosses over, only one time zone change. Not a factor. The following week in Montreal will be when time zones will play a part, so really the Western teams wont feel it unless they do in fact sweep and have to go to Montreal two weeks in a row, and I bet if that happened, Neither Western team would fly back, but instead elect to stay the week in Montreal.