Everyone brought back is my dream.
Snake returns, played by Hayter again. Getting Hayter in the studio was really hard to do since he's union. Timing didn't work out until DLC came into play. Plays exactly the same.
Squirtle returns. His moves have been buffed-- he now uses Hydro Pump instead of Water Gun (charges and causes damage). His side special is now Surf that moves more horizontally. His up special is now Waterfall that moves more vertically. His down special is withdraw, which works more as a counter as it builds up. Final Smash is Water Spout, where the stage has randomized water spouts erupting out of it.
Ivysaur returns. Moves have been buffed-- bullet seed is now leech seed, shoots directly upwards. Razor leaf is now leaf storm, and works more like Megaman's attack. Recovery is now Seed Bomb, and is used to explode upwards. While on the ground you can aim it. Down special is now vine whip and is a grab move that targets enemies. Final Smash is solar beam.
Pichu returns. Plays exactly the same, with more power, more speed, but the same amount of damage. Headbutt move can be turned into Iron Tail, where he finishes the move with a hard tail slap. Minor differences can be tweeked.
Ice Climbers return, exclusive DLC to the New 3DS and Wii U. Play exactly as they used to with minor buffs/changes.
Young Link returns. Fire arrows, bigger blast for bombs, no charging hero spin, faster more damaging boomerang, mix of Toon and Link's regular moves. Final Smash is Fierce Diety mask or Biggoron Sword.
Wolf returns. Final Smash is a clone of Zero Suit's.
Pokemon Trainer returns. Fights himself. Uses Pokeballs that work like Yoshi's eggs, bicycle similar to Wario's bike, Pidgeot recover similar to Megaman's, fishing pole used as a grab. Final Smash sends out Blaziken to go Mega and attack- is named Pokemon Battle (because you get caught in this Final Smash by looking at him)
Everyone returns. Everyone!