BluePikmin11
Member
We’ve heard that “Smash for Switch” (name not final) is a combination of 3DS and Wii U content, a ‘director’s cut’. The game will feature some new content including 2 new characters.
Let's look at the definition of director’s cut itself.
director's cut- a version of a movie that reflects the director's original intentions, released after the first studio version.

If this means cut characters, then Ice Climbers is most likely one of the first characters we will see in the Smash Switch version. Ice Climbers were originally meant to be added according to Sakurai in interviews, but they were scrapped when the 3DS could not handle them.

This also means Chorus Kids have a very high chance in getting in. With notable Rhythm Heaven content such as enemies in 3DS Smash Run and the Gematsu leak being heavily speculated to be an original proposal for newcomers, I think we will finally see Chorus Kids coming to fruition as fighters in the Smash Switch version.
Those are the two characters I definitely see happening for the initial Switch version of Smash, according to Source Gaming’s leak. Beyond those two, I do not think there were any other characters that could’ve been planned for original release of Smash Wii U/3DS.