Is it bad that that trailer made me finally want the game?
Well, that was kinda the goal. Most people couldn't get beyond the "just another Smash Bros clone" hump (myself included). But what they showcased in THIS trailer (very creatively I might add) is that the value of a game lies in the creative lore and abilities of the CHARACTERS, and not simply the ability to jump on platforms and hit things.
From the lore perspective, this game can't help but offer something unique, because nobody else has had the rights to this particular set of characters yet.