So here's my dream representation for B-K.
B: Rat-a-tap-rap
B>: Breegull Blaster (Goes from Normal->Fire->Electric->Grenade Egg, longer you hold it.)
^B: Shock Jump
VB: Drill Bill
Smash ->A: Kazooie Slam
Smash VA: Pack Whack
Smash ^A: Flip Flap Jump.
Meteor Smash: Ground Pound
Dash A: Roll.
Final Smash: T-Wrecks. Transform into an unflinching, hard hitting TRex that is slower than mollases. Even turning takes time.
Assist Trophy: Mumbo Jumbo. Fires a beam straight forward that places a random negative status effect on whoever it hits, friend or foe.
Stage: Furnace of Fun 64. Battle field-like layout, but the twist is that the background displays smash/nintendo/rare trivia. Step into the light that represents the right answer on the battlefield first for either an slight attack/defense boost or a small amount healed. Ignoring it does nothing too you, but you're punished if you choose wrong. (Lessened Attack/Defense or small amount of damage.) Final destination variant has rare characters participate in the quiz in the background instead.
Music:
-BK Main Theme (Remix)
-Stage Medely (Remix) (TTC, GV, FEZP, MMM, RBB)
-Furnace of Fun
-Jinjo Village (Remix)
-WitchyWorld
-Boss encounter medley
-Humba Wumba Theme (Remix)
-Cliff Farm
-Spiller's Harbor
-The Nuts and Bolts Hub World Theme
-Spaceport Alpha (remix)
-Hot Top Volcano (remix)
-Windy (remix)
-Great Mighty Poo (Remix)
-Perfect Dark Medley
-Battletoads Medley (remix)
-Speccy/NES Medley
-Blast Corps Medley (remix)
-KI Main Theme
-Star Fox Adventures Medley
Trophies:
BK: Banjo, Kazooie, Mumbo, Gruntilda, Bottles, Tooty, Blubber, Boggy, Klungo, Furnace of Fun Stage, Humba, Jamjars, Jinjo King w/Jinjos, Mingilla/Blobella, HAG-1, Bozzeye, Mecha Gruntilda, Jolly Roger, Trophy Thomas, Lord Of Games, Piddles, Redesign Humba/Mumbo.
Rare: Conker, Berri, Greg, Beardy, Panther King, Weasel Mafia Boss, Joana Dark, Skedar, Elvis, Rash, Zits, Pimple, Princess Angelica, Turbo Tunnel Bike, Saberman, Sabre Wulf, Jetpac, Kuros, Solar Jetman, Snake from Snake Rattle and Roll, Thunderfist, Cinder, Spinal, TJ Combo, Horace Horsetachio, Mr. Pants.
Taunts: Pulls out Gameboy and Plays. Kazooie taps Banjo on head, who then gets annoyed. Takes out Banjo and strums.
Victory theme: Grabbing 10 Jiggys in a world jingle.