WJ provides basic air transportation, but what makes it notable is that it does so in many small markets, and with a very high degree of success and profitability.
Actually, I think YHM is a pretty good alternative to YYZ. Although it may be inconvenient for people from the north of Toronto to get to, YHM is cheaper, it gives fast turnaround times, it avoids the head-on competition, and it's more convenient for many people south of YYZ and into the Hamilton area.
As for the complaint of not wanting to go to YHM to get to the west, really WJ is a short to medium haul carrier, so to get to YVR from Toronto I would think the charters are a better bet anyways. And at this point WJ's aircraft don't really have long enough range to do red-eyes with a full load. It's route network in eastern Canada is fairly basic at this point, but it is rapidly growing, and for anyone in Thunder Bay or further west, it has a fairly good route network with few holes left to fill in.
What continually fascinates me about WJ is how similar some of it's structure is to what Pacific Western used to do. I hope WJ learns from PWA's mistakes, and doesn't let it's ambitions take over...