Here's a game:
You Are Sakurai Bias!
Pick 1 Smash Franchise (hell, it can be one that isn't in SSB yet if you want) and say how you would shamelessly cater to your own bias in Smash with content
My bias? Pokemon:
I would include three more Pokemon for Ultimate, a 3rd Gen, 5th Gen, and 7th Gen, and reveal them all in the same trailer
Pikachu's/Pichu's Side Special is now Volt Tackle (its much faster than Charizard's Flare Blitz, but does less damage and no recoil to itself)
Pikachu's/Pichu's Final Smash will be its Z-Move instead
Mewtwo's Shadow Ball damages as it charges
All of Pokemon Trainer's Pokemon will gain a 4th special; Pokemon Changing is now down by pressing A+B together
Even more stages including: Poke Floats, Tower of Mastery, Pokemon Battle Royal Ring, Battle Frontier Emerald, and Poketopia
Greninja in Ultimate is Smash 4 out-of-the-gate, pre-patched level (before the 20 nerfs and patches)
Fire Emblem.
Changes:
-Marth: Now has the Fire Emblem in his model, and uses his kingly attire. He remains mostly unchanged otherwise. The Fire Emblem acts like Link's Hylian Shield in his idle animation.
-Ike: Mostly unchanged, but his default costume is back to Radiant Dawn, and his neutral B now fires off shockwaves when uncharged (Think Cloud's bladebeam)
-Robin: Now he floats instead of running. His run speed is now around Smash 4 Cloud, and his weapon's cooldowns are halved. Nosferatu can be used up close or stretched out to cover a further distance based on how long you hold the down b for.
-Lucina: Has her unique idle stance from every single one of her appearances outside Smash. She and Chrom now share a moveset, meaning she is no longer a Marth echo fighter and basically a Roy echo/the new Roy.
-Chrom: Stays the same, just he's now an echo of Lucina, or vice versa.
-Corrin: Up smash and down smash now turn Corrin into a dragon, and his new Final Smash calls in either Ryoma or Xander at random.
Add:
-Hector as a new unique character.
-Ephraim as a brand new character.
-Celica as a semiclone of the new Robin and Marth. Her neutrals are all Marths, but she has Robin's special moves. Her movement is more Marth than Robin.
-Black Knight as a semiclone of Ike. Just a couple of tweaks to fit his size and model, and he has the Warp Powder as his up b.
Stages:
-Arena Ferox and Coliseum return
-Ostian Palace is added as Hector's home stage
-Duma Tower is added as a scrolling stage, becomes static once you reach the top. Duma watches in the background.
-Opera House from Fates, with Azura performing in the background.
Assists:
-Lyn is revamped entirely. She now does her iconic critical hit animation.
-Sigurd ravages the battlefield from his mount. His movement is like a much larger and aggresive Gogoat, and with a guy swinging a sword from it.
-Eirika as a quick swordfighter assist, but she also grants player buffs to the person who summoned her.
-Tharja uses a variety of magic attacks to deal damage to those around her.
Music:
Man, just add in the entire OSTs to FE7, Awakening, Fates, Path of Radiance, and Shadows of Valentia.
