TRANSWEDE
Can't see where you are coming from on all year round YYZ service. Filling a once weekly summer IT flight really has no bearing at all on the viability of a YYZ sheduled service. The weekly summer NCL - YYZ is solely toursist's, a substantial number of these being VFR's & virtually no business users.
You might as well ask the question why no weekly summer IT's to NYC ? these were popular when operated by Jetsave in the 70's, & I presume their eventual downfall was more to the ecconomics of available aircraft at the time ie 707's & when loaded their propensity to produce spectacular take off runs on 25....
As for Loco's, my view on these hasn't changed ie great for flattering PAX no.'s, but "there are no free lunches" and as such giveaways are unsustainable. Loco's feed off inducing high load factors by attracting tourists at whatever price, what we are now begining to see are the symptoms of saturation in some markets, ie "the been there, where to next?" mentality. Hence the need to invent new destinations & thining of shedules now becoming more common.
As for the guy who suggested a combination of NYC shedule with Loco's in the form of JET 2 operation.......ridiculous !