My Ultimate Deluxe
Playable Characters
82. Mii Mage
83. Ryu Hayabusa [Ninja Gaiden]
84. Bill Rizer/Lance Bean [Contra]
85. Arthur [Ghosts ‘n Goblins]
86. Kunio [River City Ransom]
87. Bub/Bob [Bubble Bobble]
88. SV-001 Metal Slug [Metal Slug]
89. Shantae [Shantae]
90. Bomberman [Bomberman]
90. Kazuma Kiryu [Yakuza]
91. Jill Valentine [Resident Evil]
92. Morrigan [Darkstalkers]
93. Nightmare [Soul Calibur]
94. Nakoruru [Samurai Shodown]
95. Goemon/Ebisumaru [Legend of the Mystical Ninja]
97. Captain Toad/Toadette [Treasure Tracker]
98. Phoenix Wright [Ace Attorney]
99. Dante [Devil May Cry]
100. King Hippo [Punch-Out]
Echo Fighters
10e. Ninten [Ness]
11e. Black Shadow [Captain Falcon]
16e. Impa [Sheik]
27e. Galacta Knight [Meta Knight]
31e. Liquid Snake [Snake]
32e. Black Knight [Ike]
36e. Dixie Kong [Diddy Kong]
38e. Shadow [Sonic]
46e. Bass [Megaman]
61e. Zack [Cloud]
63e. Jeanne [Bayonetta]
64e. Octolings [Inklings]
86e. Riki [River City Ransom]
Bosses
Mother Brain [Metroid]
Andross(N64 version) [Star Fox]
Arceus [Pokemon]
Porky [Earthbound]
Medusa [Kid Icarus]
Liquid Snake piloting Metal Gear REX [Metal Gear]
Eggman piloting Death Egg Robot [Sonic the Hedgehog]
Dr. Wily piloting Wily Machine [Mega Man]
Safer∙Sephiroth [Final Fantasy]
Astaroth [Ghosts N' Goblins]
Assist Trophies
Eggplant Wizard [Kid Icarus]
Chocobo [Final Fantasy]
Slimes/King Slime[Dragon Quest]
Rygar [Rygar]
Abobo [Double Dragon]
Vic Viper [Gradius]
Mike Jones [Star Tropics]
Sophia 3rd [Blaster Master]
Firebrand [Ghosts N' Goblins]
Majima [Yakuza]
Mii Costumes
Crono [Chrono Trigger]
Randi [Secret of Mana]
Adol [Y's]
Simea [Crystalis]
Kuros [Wizards & Warriors]
Vergil [Devil May Cry]
Billy Lee/Jimmy Lee [Double Dragon]
Rash/Zitz [Battletoads]
The Amazon [Pro Wrestling]
Nathan Spencer [Bionic Commando]
Character Changes
Give Ganondorf a completely unique moveset. Make Black Shadow Captain Falcon's echo and give him Ganondorf's old moveset.
Replace Mario's FLUDD with Cappy.
Make each of Pokemon Trainer's Pokemon a separate character, give every Pokemon except Mewtwo a trainer.
Give Chrom a new unique moveset. Make Lucina his echo. Make Roy Marth's echo.
Give Young Link and Toon Link different subweapons so they aren't just using the same Bow/Bomb/Boomerang combo as Adult Link.
Give
Falco the Sniper Rifle and
Wolf the Machine Gun from StarFox Assault.
Make Dr. Mario and Pichu echoes.
Gameplay Features
Make Hazardless versions of stages selectable from stage select the same way Omega and Battlefield versions are.
Remember my last color selection for each character. Smash 3DS did this. No idea why Wii U and Ultimate don't.
Actually balance FS Meter FSes so that people will actually use them in competitive.
Boss Rush mode.