Well,we have 29 characters confirmed so far,and 7 returning character as show on the site,probably a few of the veterans from brawl will not returning in this versions,it's time to se a few characters that probably will get cut from the roster.
Ike[]
Okay,starting with Ike from Fire Emblem,as all know,Roy was not returned in Super Smash Bros Brawl,Ike probably can have the same destiny as Roy's,and replaced with other Fire Emblem character such as Chrom or Lucina,however,it's possible that Ike will return and Chrom appearing as a Playable fighter,making 3 Fire Emble reps.He will get cut or not?Only the time will say.
Already confirmed to return.
Pokémon Trainer[]
This character is already cut from this version,since the character change won't returning.
Snake[]
I'm really wanting Snake to return,even if it's unlikely,Snake will probably get cut since he just appeared because of Hideo Kojima who begged his appearance as all of oyu know,Snake moveset doesn't fit in Smash,he fit more in the PlayStation.
Lucas[]
Now it's Lucas,Lucas has some reasons to return and to not return,starting with the "Not returning" part,Lucas is very unpopular and considered by others as a clone of Ness,the "returning" part it's because the Earthbound/Mother series needs more representants.
Wolf[]
Okay,to be honest,i want Wolf to return too,but this probably wont happening,the reason? What type of new moves it's possible to create to him? yeah,he probably won't returning in this version of Smash,he will return,like i said to Ike,only the time will say.