Well I do think this one is pretty easy, It has to be Newfoundland. I think there is only 1 playoffs in the FHM era where Newfoundland was not the team who eliminated Maine in the playoffs. There were some very strong teams who ran into that wall and faltered. This doesn't even mean they are always good either! Maine could have been the top seed and Newfound 8th and the same plays out. The one time Maine made it to the finals since their move they played against Newfoundland in the finals, and you already know the result. Would they have made the finals if they had to go through Newfoundland instead? Probably not.
It's going to be a celebration for the ages when Maine overcomes their playoff Goliath. The best would be if it is for a Challenge Cup, but let's start small, I'll take a win in any round!