From Ask Iwata: Super Smash Bros BrawlRight. It wasnt bad at all and had its own appeal, but it was a bit different than what I had envisioned it would be. It went something like this
"Some of the characters are on a bus on the way to the stadium. Samus is there. Donkey Kong is there and
Snake is watching the bus from afar." It was like that. (laughs) I had envisioned a more serious tone for the story. Something with some misfortunelike a single character escaping total annihilation of his squadron and then fighting back while rounding up his allies. Ultimately, we worked together and successfully organized our ideas into the storyline for The Subspace Emissary.