

I am certain that Sakurai is shooting for something like this, to launch the new smash brothers at least a year and few months after Wii U launch, and he realized this would be impossible to achieve by his team alone. And in fact, Melee came out on the GC launch window, while brawl took less than 1.5 years to finish and bring to the Wii after its launch. All smash brother projects have come out in reasonable time spans after their consoles launch, with the exception of the original N64 Smash, which is understandable, since it was a new concept. Not necessarily, this team was made only just earlier this year, but as far as we all know it was after starting work, that they realized a partnership with a secondary studio was required in order to finish in a reasonable time span.
