I would also like to see and platformer/labyrinth type of crossover like melee's/brawl's adventure mode or metroid. I always wondered how creative Nintendo would get with that.
I can see a lot of things that could be done with metroid's style with crossover characters like Link and Fire Emblem characters. A Mario and Luigi RPG style crossover would be cool too. Teaming up with Link or Samus, Duck Hunt duo, Ness... oh my gosh the team attacks, the possible worlds and enemies. The possible storyline. I could see this being the next big thing.
I can see a lot of things that could be done with metroid's style with crossover characters like Link and Fire Emblem characters. A Mario and Luigi RPG style crossover would be cool too. Teaming up with Link or Samus, Duck Hunt duo, Ness... oh my gosh the team attacks, the possible worlds and enemies. The possible storyline. I could see this being the next big thing.