To reiterate my earlier post near the beginning of this thread, I don't care if Canada were to do nothing in 2014, or even 2018 (of course, scoring a few goals, or maybe getting a couple of points would be nice). Just to BE there after 28 years, to be on the world stage (and let's face it, the World Cup is way bigger business now than it was in 1986) after so long - I would value that more over TFC winning a MLS Cup between now and then.
But the longer it takes for Canada to make a World Cup appearance, the more the trade off in putting up with a lack of TFC success. So at a certain point, the latter would become more important.