I would like,
A. Everyone would have ten recolors instead of alternate costumes, (see D for explaination)
B. Every single character in the series history except Dr. Mario (see D) Bayonetta (don't like her) and Corrin (taking up Pichu's roster slot)
C. A heck of a lot more fighters, including Alph from Pikmin 3, Frank West from Dead Rising (Dead Rising: Chop Till you Drop was made specifically for the Wii, Dead Rising 2: Off The Record is also on the Wii), Braixen from Pokemon X&Y, Boney from Mother 3, Knuckles from Sonic The Hedgehog 3, M. Bison from Street Fighter, Jin Kazuma from Tekken... whichever one he was first in, Leon Kennedy from Residents Evil 2, Merchant from Residents Evil 4 (I wasn't joking when I said A heck of a lot more fighters), Rayman from Rayman (duh), Paula from Mother 2/Earthbound, Ninten from Mother, Lloyd from Mother, Zack from Mother 4 (My wants are unrealistic, we've already discussed this), Raiden from Metal Gear Solid 2, Murphy Pendleton and Charlie Pendleton (tag team) from Silent Hill Downpour (there were some Silent Hill games on Nintendo systems, I think) and many, many, MANY, others.
D. Even more characters would be availible in the customazation option of the game, which now fuctions more like the customazation in Team Fortress 2, where you can change the equipment of a character, some examples of equipment are, Various bat's for Ness, a whole onslaught of slaughter weapons from Frank, alternate appearences for Ninten, Jeff for Lloyd, every normal villager in the series's history for Villager, Louie and The President for Olimar, Brittany and Charlie for Alph, Ken for Ryu, Raichu for Pikachu, Outfits of a bunch of other trainers like Lucas, Dawn, (Pokemon Diamond and Pearl), Calum (Pokemon X&Y), Theo (Pokemon Uranium) for Red, Chuck Greene, Nick Ramos, **** Baker, and Brad Park for Frank, Shade and Tikal for Knuckles, James and Laura for Murphy and Charlie, etc.
E. Stages. Many Stages. So Many Stages. Every stage in the series history, abosolutely every one, and many more like Podunk (Mother 1) Toluca Lake (Silent Hill 2), Williamette Mall (Dead Rising), Echidna Shrine (Sonic Adventure 1), Dedede's Castle (Kirby), Moki Town (Pokemon Uranium), Tazmily Village (Mother 3), Forest Navel (Pikmin), Gloomy Manor (Luigi's Mansion 2: Dark Moon), etc.
F. Story Mode. Nuff Said.
G. Remove Smash tour, bring Smash run back, also have Break the targets and Board the platforms replace Target Blast, and each character has their own Break The Target and Board The Platform stages.
H. Have Polygons, Wireframes, Alloys, and Subspacial Clones be your opponents in Multi Man Smash/Brawl/Melee/whatever. They Polygons, Wireframes, Alloys, and Clones would be of every character (including alternate character in the customazation options) in the game.
I. More Trophies. About 5000 total sounds good.
J. More Music, more Earthbound/Mother series Music, and more Sonic series music.
K. Make the online mode work.
L. Don't Be afraid to put this on the PC since the Switch will EXPLODE if you put this on it.
M. If it was actually put on PC, make sure its PC only, not Laptop. Heavy was already cut from the roster since Laptop owners couldn't handle him. Poor Desktop owners.