It sure isn't my ultimate dream, I hate the idea myself, but one must appease the masses...
I've no idea who Emerl is, but that doesn't really sound like my idea. You know that one Mii you make when you start up your Wii U/3DS for the first time? The specified one that becomes the "main" Mii of the console and such. Basically my idea is that the game takes that Mii and gives you a set weight class based on what you had already chosen as the height/width of the Mii, so you wouldn't actually make the Mii in-game. It would come with a generic moveset, but would be able to be customized in a special menu, certain moves (like recoveries) would function better or worse depending on the weight of the Mii. You could basically give your Mii a sword and have him perform some of Link, Marth, and Ike's regular attacks, then give him Pit's recovery, Fox's reflector, Villager's item catch, etc.