Preferably some very unpopular team, so people root for the Yotes next year, and don't feel that the Cup now just goes some rounds with the previous hasn't-got's. So I would probably end up rooting for all the wrong teams, like Boston, Chicago, Pens or even the Habs (they will "tank" in the play-ins, though).
OK, there is one exception. I want Zuccarello to have a cup. For him to get it, while the entire Wild-board goes up in flames as they realize he is a playoff-beast, that would be fun. Of course, with their goalies, this is a strech.