Polaris, you're right Martinair serves Edmonton on a charter basis only. I have a feeling that if the demand warranted, scheduled service would follow. But I wouldn't exactly hold my breath, though - Edmonton's had a hard time getting international service enough as it is, even though the airport authority has been fighting for it tooth and claw. Martinair already has a ticket counter at YEG, so that is not a problem should scheduled service be approved.
MEL, that's true about what you said, but Martinair has also been seen flying MD-11s into YEG and YYC, too.