By taking the top two ranking characters placement on my tier list, and adding them together, I managed to make the most wanted "Double Additions" to Smash. So, for example, Isaac was ranked 4th, and Little Mac 5th, so, I added their numbers together and Smaller Franchises got 9 points, the least amount of points out of all the franchises, making them the MOST WANTED DOUBLE ADDITION.
Smaller Franchise Duo (Isaac, Little Mac) 9
Donkey Kong (K. Rool, Dixie) 11
Pokemon (Mewtwo, Zoroark) 18
Mario (Toad, Junior) 19
Kid Icarus (Medusa, Palutena) 25
F-Zero (Goroh, Shadow) 30
Third Party Duo (Megaman, Geno) 30
Fire Emblem (Roy, Caeda) 46
Legend Of Zelda (Ghirahim, Impa) 59
Wario (Ashley, Syrup) 62
Metroid (Ridley, Anthony Higgs) 64
Mother (Claus, Porky) 97
StarFox (Krystal, Slippy) 104
Kirby (Bandana Dee, Prince Fluff) 116
Yoshi (Kamek, Shy Guy) 145